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      in Energy

      Exploring new sides of climate and sustainability research

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      When the MIT Climate and Sustainability Consortium (MCSC) launched its Climate and Sustainability Scholars Program in fall 2022, the goal was to offer undergraduate students a unique way to develop and implement research projects with the strong support of each other and MIT faculty. Now into its second semester, the program is underscoring the value of fostering this kind of network — a community with MIT students at its core, exploring their diverse interests and passions in the climate and sustainability realms.Inspired by MIT’s successful SuperUROP [Undergraduate Research Opportunities Program], the yearlong MCSC Climate and Sustainability Scholars Program includes a classroom component combined with experiential learning opportunities and mentorship, all centered on climate and sustainability topics.“Harnessing the innovation, passion, and expertise of our talented students is critical to MIT’s mission of tackling the climate crisis,” says Anantha P. Chandrakasan, dean of the School of Engineering, Vannevar Bush Professor of Electrical Engineering and Computer Science, and chair of the MCSC. “The program is helping train students from a variety of disciplines and backgrounds to be effective leaders in climate and sustainability-focused roles in the future.”

      “What we found inspiring about MIT’s existing SuperUROP program was how it provides students with the guidance, training, and resources they need to investigate the world’s toughest problems,” says Elsa Olivetti, the Esther and Harold E. Edgerton Associate Professor in Materials Science and Engineering and MCSC co-director. “This incredible level of support and mentorship encourages students to think and explore in creative ways, make new connections, and develop strategies and solutions that propel their work forward.”The first and current cohort of Climate and Sustainability Scholars consists of 19 students, representing MIT’s School of Engineering, MIT Schwarzman College of Computing, School of Science, School of Architecture and Planning, and MIT Sloan School of Management. These students are learning new perspectives, approaches, and angles in climate and sustainability — from each other, MIT faculty, and industry professionals.Projects with real-world applicationsStudents in the program work directly with faculty and principal investigators across MIT to develop their research projects focused on a large scope of sustainability topics.

      “This broad scope is important,” says Desirée Plata, MIT’s Gilbert W. Winslow Career Development Professor in Civil and Environmental Engineering, “because climate and sustainability solutions are needed in every facet of society. For a long time, people were searching for a ‘silver bullet’ solution to the climate change problems, but we didn’t get to this point with a single technological decision. This problem was created across a spectrum of sociotechnological activities, and fundamentally different thinking across a spectrum of solutions is what’s needed to move us forward. MCSC students are working to provide those solutions.”

      Undergraduate student and physics major M. (MG) Geogdzhayeva is working with Raffaele Ferrari, Cecil and Ida Green Professor of Oceanography in the Department of Earth, Atmospheric and Planetary Sciences, and director of the Program in Atmospheres, Oceans, and Climate, on their project “Using Continuous Time Markov Chains to Project Extreme Events under Climate.” Geogdzhayeva’s research supports the Flagship Climate Grand Challenges project that Ferrari is leading along with Professor Noelle Eckley Selin.

      “The project I am working on has a similar approach to the Climate Grand Challenges project entitled “Bringing computation to the climate challenge,” says Geogdzhayeva. “I am designing an emulator for climate extremes. Our goal is to boil down climate information to what is necessary and to create a framework that can deliver specific information — in order to develop valuable forecasts. As someone who comes from a physics background, the Climate and Sustainability Scholars Program has helped me think about how my research fits into the real world, and how it could be implemented.”

      Investigating technology and stakeholders

      Within technology development, Jade Chongsathapornpong, also a physics major, is diving into photo-modulated catalytic reactions for clean energy applications. Chongsathapornpong, who has worked with the MCSC on carbon capture and sequestration through the Undergraduate Research Opportunities Program (UROP), is now working with Harry Tuller, MIT’s R.P. Simmons Professor of Ceramics and Electronic Materials. Louise Anderfaas, majoring in materials science and engineering, is also working with Tuller on her project “Robust and High Sensitivity Detectors for Exploration of Deep Geothermal Wells.”Two other students who have worked with the MCSC through UROP include Paul Irvine, electrical engineering and computer science major, who is now researching American conservatism’s current relation to and views about sustainability and climate change, and Pamela Duke, management major, now investigating the use of simulation tools to empower industrial decision-makers around climate change action.Other projects focusing on technology development include the experimental characterization of poly(arylene ethers) for energy-efficient propane/propylene separations by Duha Syar, who is a chemical engineering major and working with Zachary Smith, the Robert N. Noyce Career Development Professor of Chemical Engineering; developing methods to improve sheet steel recycling by Rebecca Lizarde, who is majoring in materials science and engineering; and ion conduction in polymer-ceramic composite electrolytes by Melissa Stok, also majoring in materials science and engineering.

      Melissa Stok, materials science and engineering major, during a classroom discussion.

      Photo: Andrew Okyere

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      “My project is very closely connected to developing better Li-Ion batteries, which are extremely important in our transition towards clean energy,” explains Stok, who is working with Bilge Yildiz, MIT’s Breene M. Kerr (1951) Professor of Nuclear Science and Engineering. “Currently, electric cars are limited in their range by their battery capacity, so working to create more effective batteries with higher energy densities and better power capacities will help make these cars go farther and faster. In addition, using safer materials that do not have as high of an environmental toll for extraction is also important.” Claire Kim, a chemical engineering major, is focusing on batteries as well, but is honing in on large form factor batteries more relevant for grid-scale energy storage with Fikile Brushett, associate professor of chemical engineering.Some students in the program chose to focus on stakeholders, which, when it comes to climate and sustainability, can range from entities in business and industry to farmers to Indigenous people and their communities. Shivani Konduru, an electrical engineering and computer science major, is exploring the “backfire effects” in climate change communication, focusing on perceptions of climate change and how the messenger may change outcomes, and Einat Gavish, mathematics major, on how different stakeholders perceive information on driving behavior.Two students are researching the impact of technology on local populations. Anushree Chaudhuri, who is majoring in urban studies and planning, is working with Lawrence Susskind, Ford Professor of Urban and Environmental Planning, on community acceptance of renewable energy siting, and Amelia Dogan, also an urban studies and planning major, is working with Danielle Wood, assistant professor of aeronautics and astronautics and media arts and sciences, on Indigenous data sovereignty in environmental contexts.

      “I am interviewing Indigenous environmental activists for my project,” says Dogan. “This course is the first one directly related to sustainability that I have taken, and I am really enjoying it. It has opened me up to other aspects of climate beyond just the humanity side, which is my focus. I did MIT’s SuperUROP program and loved it, so was excited to do this similar opportunity with the climate and sustainability focus.”

      Other projects include in-field monitoring of water quality by Dahlia Dry, a physics major; understanding carbon release and accrual in coastal wetlands by Trinity Stallins, an urban studies and planning major; and investigating enzyme synthesis for bioremediation by Delight Nweneka, an electrical engineering and computer science major, each linked to the MCSC’s impact pathway work in nature-based solutions.

      The wide range of research topics underscores the Climate and Sustainability Program’s goal of bringing together diverse interests, backgrounds, and areas of study even within the same major. For example, Helena McDonald is studying pollution impacts of rocket launches, while Aviva Intveld is analyzing the paleoclimate and paleoenvironment background of the first peopling of the Americas. Both students are Earth, atmospheric and planetary sciences majors but are researching climate impacts from very different perspectives. Intveld was recently named a 2023 Gates Cambridge Scholar.

      “There are students represented from several majors in the program, and some people are working on more technical projects, while others are interpersonal. Both approaches are really necessary in the pursuit of climate resilience,” says Grace Harrington, who is majoring in civil and environmental engineering and whose project investigates ways to optimize the power of the wind farm. “I think it’s one of the few classes I’ve taken with such an interdisciplinary nature.”

      Shivani Konduru, electrical engineering and computer science major, during a classroom lecture

      Photo: Andrew Okyere

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      Perspectives and guidance from MIT and industry expertsAs students are developing these projects, they are also taking the program’s course (Climate.UAR), which covers key topics in climate change science, decarbonization strategies, policy, environmental justice, and quantitative methods for evaluating social and environmental impacts. The course is cross-listed in departments across all five schools and is taught by an experienced and interdisciplinary team. Desirée Plata was central to developing the Climate and Sustainability Scholars Programs and course with Associate Professor Elsa Olivetti, who taught the first semester. Olivetti is now co-teaching the second semester with Jeffrey C. Grossman, the Morton and Claire Goulder and Family Professor in Environmental Systems, head of the Department of Materials Science and Engineering, and MCSC co-director. The course’s writing instructors are Caroline Beimford and David Larson.  

      “I have been introduced to a lot of new angles in the climate space through the weekly guest lecturers, who each shared a different sustainability-related perspective,” says Claire Kim. “As a chemical engineering major, I have mostly looked into the technologies for decarbonization, and how to scale them, so learning about policy, for example, was helpful for me. Professor Black from the Department of History spoke about how we can analyze the effectiveness of past policy to guide future policy, while Professor Selin talked about framing different climate policies as having co-benefits. These perspectives are really useful because no matter how good a technology is, you need to convince other people to adopt it, or have strong policy in place to encourage its use, in order for it to be effective.”

      Bringing the industry perspective, guests have presented from MCSC member companies such as PepsiCo, Holcim, Apple, Cargill, and Boeing. As an example, in one class, climate leaders from three companies presented together on their approaches to setting climate goals, barriers to reaching them, and ways to work together. “When I presented to the class, alongside my counterparts at Apple and Boeing, the student questions pushed us to explain how can collaborate on ways to achieve our climate goals, reflecting the broader opportunity we find within the MCSC,” says Dana Boyer, sustainability manager at Cargill.

      Witnessing the cross-industry dynamics unfold in class was particularly engaging for the students. “The most beneficial part of the program for me is the number of guest lectures who have come in to the class, not only from MIT but also from the industry side,” Grace Harrington adds. “The diverse range of people talking about their own fields has allowed me to make connections between all my classes.”Bringing in perspectives from both academia and industry is a reflection of the MCSC’s larger mission of linking its corporate members with each other and with the MIT community to develop scalable climate solutions.“In addition to focusing on an independent research project and engaging with a peer community, we’ve had the opportunity to hear from speakers across the sustainability space who are also part of or closely connected to the MIT ecosystem,” says Anushree Chaudhuri. “These opportunities have helped me make connections and learn about initiatives at the Institute that are closely related to existing or planned student sustainability projects. These connections — across topics like waste management, survey best practices, and climate communications — have strengthened student projects and opened pathways for future collaborations.

      Basuhi Ravi, MIT PhD candidate, giving a guest lecture

      Photo: Andrew Okyere

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      Having a positive impact as students and after graduation

      At the start of the program, students identified several goals, including developing focused independent research questions, drawing connections and links with real-world challenges, strengthening their critical thinking skills, and reflecting on their future career ambitions. A common thread throughout them all: the commitment to having a meaningful impact on climate and sustainability challenges both as students now, and as working professionals after graduation.“I’ve absolutely loved connecting with like-minded peers through the program. I happened to know most of the students coming in from various other communities on campus, so it’s been a really special experience for all of these people who I couldn’t connect with as a cohesive cohort before to come together. Whenever we have small group discussions in class, I’m always grateful for the time to learn about the interdisciplinary research projects everyone is involved with,” concludes Chaudhuri. “I’m looking forward to staying in touch with this group going forward, since I think most of us are planning on grad school and/or careers related to climate and sustainability.”

      The MCSC Climate and Sustainability Scholars Program is representative of MIT’s ambitious and bold initiatives on climate and sustainability — bringing together faculty and students across MIT to collaborate with industry on developing climate and sustainability solutions in the context of undergraduate education and research. Learn about how you can get involved. More

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      in Environment

      Podcast: Curiosity Unbounded, Episode 1 — How a free-range kid from Maine is helping green-up industrial practices

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      The Curiosity Unbounded podcast is a conversation between MIT President Sally Kornbluth and newly-tenured faculty members. President Kornbluth invites us to listen in as she dives into the research happening in MIT’s labs and in the field. Along the way, she and her guests discuss pressing issues, as well as what inspires the people running at the world’s toughest challenges at one of the most innovative institutions on the planet.

      In this episode, President Kornbluth sits down with Desirée Plata, a newly tenured associate professor of civil and environmental engineering. Her work focuses on making industrial processes more environmentally friendly, and removing methane — a key factor in global warming — from the air.

      FULL TRANSCRIPT:

      Sally Kornbluth: Hello, I’m Sally Kornbluth, president of MIT, and I’m thrilled to welcome you to this MIT community podcast, Curiosity Unbounded. In my first few months at MIT, I’ve been particularly inspired by talking with members of our faculty who recently earned tenure. Like their colleagues, they are pushing the boundaries of knowledge. Their passion and brilliance, their boundless curiosity, offer a wonderful glimpse of the future of MIT.

      Today, I’m talking with Desirée Plata, associate professor of civil and environmental engineering. Desirée’s work is focused on predicting the environmental impact of  industrial processes and translating that research to real-world technologies. She describes herself as an environmental chemist. Tell me a little more about that. What led you to this work either personally or professionally?

      Desirée Plata: I guess I always loved chemistry, but before that, I was just a kid growing up in the state of Maine. I like to describe myself as a free-range kid. I ran around and talked to the neighbors and popped into the local businesses. One thing I observed in my grandparents’ town was that there were a whole lot of sick people. Not everybody, but maybe every other house. I remember being about seven or eight years old and driving home with my mom to our apartment one day and saying, “It’s got to be something everybody shares. The water, maybe something in the food or the air.” That was really my first environmental hypothesis.

      Sally: You had curiosity unbounded even when you were a child. 

      Desirée: That’s right. I spent the next several decades trying to figure it out and ultimately discovered that there was something in the water where my grandmother lived. In that time, I had earned a chemistry degree and came to MIT to do my grad work at MIT in the Woods Hole Oceanographic in environmental chemistry and chemical oceanography.

      Sally: You saw a pattern, you thought about it, and it took some time to get the tools to actually address the questions, but eventually you were there. That is great. As I understand it, you have two distinct areas of interest. One is getting methane out of the atmosphere to mitigate climate warming, and the other is making industrial processes more environmentally sound. Do you see these two as naturally connected?

      Desirée: I’ll start by saying that when I was young and thinking about this chemical contamination that I hypothesized was there in my grandmother’s neighborhood, one of the things—when I finally found out there was a Superfund site there—one of the things I discovered was that it was owned by close family friends. They were our neighbors. The decisions that they made as part of their industrial practice were just part of standard operating procedure. That’s when it clicked for me that industry is just going along, hoping to innovate to make the world a better place. When these environmental impacts occur, it’s often because they didn’t have enough information or know the right questions to ask. I was in graduate school at the time and said, “I’m at one of the most innovative places on planet Earth. I want to go knock on the doors of other labs and say, ‘What are you making and how can I help you make it better?'”

      If we all flash back to around 2008 or so, hydraulic fracturing was really taking off in this country and there was a lot of hypotheses about the number of chemicals being used in that process. It turns out that there are many hundreds of chemicals being used in the hydraulic fracturing process. My group has done an immense amount of work to study every groundwater we could get our hands on across the Appalachian region of the eastern United States, which is where a lot of this development took place and is still taking place. One of the things we discovered was that some of the biggest environmental impacts are actually not from the injected chemicals but from the released methane that’s coming into the atmosphere. Methane is growing at an exorbitant rate and is responsible for about as much warming as CO2 over the next 10 years. I started realizing that we, as engineers and scientists, would need a way to get these emissions back. To take them back from the atmosphere, if you will. To abate methane at very dilute concentrations. That’s what led to my work in methane abatement and methane mitigation.

      Sally: Interesting. Am I wrong about when we think about the impact of agriculture on the environment, that methane is a big piece of that as well?

      Desirée: You are certainly not wrong there. If you look at anthropogenic emissions or human-derived emissions, more than half are associated with agricultural practices. The cultivation of meat and dairy in particular. Cows and sheep are what are known as enteric methane formers. Part of their digestion process actually leads to the formation of methane. It’s estimated that about 28% of the global methane cycle is associated with enteric methane formers in our agricultural practices as humans. There’s another 18% that’s associated with fossil energy extraction.

      Sally: That’s really interesting. Thinking about your work then, particularly in agriculture, part of the equation has got to be how people live, what they eat, and production of methane as part of the sustainability of agriculture. The other part then seems to be how you actually, if you will, mitigate what we’ve already bought in terms of methane in the environment.

      Desirée: Yes, this is a really important topic right now.

      Sally: Tell me a little bit about, maybe in semi-lay terms, about how you think about removal of methane from the environment.

      Desirée: Recently, over 120 countries signed something called the Global Methane Pledge, which is essentially a pledge to reduce 45% of methane emissions by 2030. If you can do that, you can save about 0.5 degree centigrade warming by 2100. That’s a full third of the 1.5 degrees that politicians speak about. We can argue about whether or not that’s really the full extent of the warming we’ll see, but the point is that methane impacts near-term warming in our lifetimes. It’s one of the unique greenhouse gases that can do that.

      It’s called a short-lived climate pollutant. What that means is that it lives in the atmosphere for about 12 years before it’s removed. That means if you take it out of the atmosphere, you’re going to have a rapid reduction in the total warming of planet Earth, the total radiative forcing. Your question more specifically was about, how do we grapple with this? We’ve already omitted so much methane. How do we think about, as technologists, getting it back? It’s a really hard problem, actually. In the air in the room in front of us that we’re breathing, only two of the million molecules in front of us are methane. 417 or so are CO2. If you think direct air capture of CO2 is hard, direct air capture of methane is that much harder.

      The other thing that makes methane a challenge to abate is that activating the bonds in methane to promote its destruction or its removal is really, really tricky. It’s one of the smallest carbon-based molecules. It doesn’t have what we call “Van der Waals interactions”—there are no handles to grab onto. It’s not polar. That first destruction and that first C-H bond is what we as chemists would call “spin forbidden”. It’s hard to do and it takes a lot of energy to do that. One of the things we’ve developed in my lab is a catalyst that’s based on earth-abundant materials. There are some other groups at MIT that also work on these same types of materials. It’s able to convert methane at very low levels, down to the levels that we’re breathing in this room right now.

      Sally: That’s fascinating. do you see that as being something that will move to practical application?

      Desirée: One of the things that we’re doing to try to translate this to meaningful applications for the world is to scale the technology. We’re fortunate to have funding from several different sources, some private philanthropy groups and the United States Department of Energy. They’re helping us over the next three years try to scale this in places where it might matter most. Perhaps counterintuitive places, coal mines. Coal mines emit a lot of methane and it happens to be enriched in such a way that it releases energy. It might release enough energy to actually pay for the technology itself. Another place we’re really focused on is dairy.

      Sally: Really interesting. You mentioned at the beginning that you were at MIT, you left, you came back. I’m just wondering — I’m new to MIT and, obviously, I’m just learning it — but how do you think about the MIT community or culture in a way that is particularly helpful in advancing your work?

      Desirée: For me, I was really excited to come back to MIT because it is such an innovative place. If you’re someone who says, “I want to change the way we invent materials and processes,” it’s one of the best places you could possibly be. Because you can walk down the hall and bump into people who are making new things, new molecules, new materials, and say, “How can we incorporate the environment into our decision-making process?”

      As engineering professors, we’re guilty of teaching our students to optimize for performance and cost. They go out into their jobs, and guess what? That’s what they optimize for. We want to transition, and we’re at a point in our understanding of the earth system, that we could actually start to incorporate environmental objectives into that design process.

      Engineering professors of tomorrow should, say, optimize for performance and cost and the environment. That’s really what made me very excited to come back to MIT. Not just the great research that’s going on in every nook and corner of the Institute, but also thinking about how we might influence engineering education so that this becomes part of the fabric of how humans invent new practices and processes.

      Sally: If you look back in your past, you talked about your childhood in Maine and observing these patterns. You talked about your training and how you came to MIT and have really been, I think, thriving here. Was there a path not taken, a road not taken if you hadn’t become an environmental chemist? Was there something else you really wanted to do?

      Desirée: That’s such a great question. I have a lot of loves. I love the ocean. I love writing. I love teaching and I’m doing that, so I’m lucky there. I also love the beer business. My family’s in the beer business in Maine. I thought, as a biochemist, I would always be able to fall back on that if I needed to. My family’s not in the beer business because we’re particularly good at making beer, but because they’re interested in making businesses and creating opportunities for people. That’s been an important part of our role in the state of Maine.

      MIT really supports that side of my mind, as well. I love the entrepreneurial ecosystem that exists here. I love that when you bump into people and you have a crazy idea, instead of giving you all the reasons it won’t work, an MIT person gives you all the reasons it won’t work and then they say, “This is how we’re going to make it happen.” That’s really fun and exciting. The entrepreneurship environment that exists here is really very supportive of the translation process that has to happen to get something from the lab to the global impact that we’re looking for. That supports my mission just so much. It’s been a joy.

      Sally: That’s excellent. You weren’t actually tempted to become a yeast cell biologist in the service of beer production?

      Desirée: No, no, but I joke, “They only call me when something goes really bad.”

      Sally: That’s really funny. You experienced MIT as a student, now you’re experiencing it as a faculty member. What do you wish there was one thing about each group that the other knew?

      Desirée: I wish that, speaking with my faculty hat on, that the students knew just how much we care about them. I know that some of them do and really appreciate that. When I send an email at 3:00 in the morning, I get emails back from my colleagues at 3:00 in the morning. We work around the clock and we don’t do that for ourselves. We do that to make great sustainable systems for them and to create opportunity for them to propel themselves forward. To me, that’s one of the common unifying features of an MIT faculty member. We care really deeply about the student experience.

      As a student, I think that we’re hungry to learn. We wanted to really see the ins and outs of operation, how to run a research lab. I think sometimes faculty try to spare their students from that and maybe it’s okay to let them know just what’s going on in all those meetings that we sit through.

      Sally: That’s interesting. I think there are definitely things you find out when you become a faculty member and you’re like, “Oh, so this is what they were thinking.” With regard to the passion of the faculty about teaching, it really is remarkable here. I really think some of the strongest researchers here are so invested in teaching and you see that throughout the community.

      Desirée: It’s a labor of love for sure.

      Sally: Exactly. You talked a little bit about the passion for teaching. Were there teachers along your way that you really think impacted you and changed the direction of what you’re doing?

      Desirée: Yes, absolutely. I could name all of them. I had a kindergarten teacher who would stay after school and wait for my mom to be done work. I was raised by a single mom and her siblings and that was amazing. I had a fourth-grade teacher who helped promote me through school and taught me to love the environment. If you ask fourth graders if they saw any trash on the way to school, they’ll all say, “No.” You take them outside and give them a trash bag to fill up and it’ll be full by the end of the hour. This is something I’ve done with students in Cambridge to this day and this was many years on now. She really got me aware and thinking about environmental problems and how we might change systems.

      Sally: I think it’s really great for faculty to think about their own experiences, but also to hear people who become faculty members reflect on the great impact their own teachers had. I think the things folks are doing here are going to reverberate in their student’s minds for many, many years. It also is interesting in terms of thinking about the pipeline and when you get students interested in science. You talk about your own early years of education that really ultimately had an impact.

      It’s funny, when I became president at MIT, I got a note from my second-grade teacher. I remembered her like it was yesterday. These are people that really had an impact. It’s great that we honor teaching here at MIT and we acknowledge that this is going to have a really big impact on our student’s lives.

      Desirée: Yes, absolutely. It’s a privilege to teach these top talents. At many schools around the country, it’s just young people that have so much potential. I feel like when we walk into that classroom, we’ve got to bring inspiration with us along with the tangible, practical skills. It’s been great to see what they become.

      Sally: Tell me a little bit about what you do outside of work. When you ask faculty hobbies, sometimes I go, “Hobbies?” There must be something you spend your time on. I’m just curious.

      Desirée: We’re worried we’re going to fail this part of the Q&A. Yes. I have four children.

      Sally: You don’t need any hobbies then.

      Desirée: I know. It’s been the good graces of the academic institution. Just for those people who are out there thinking about going into academia and say, “It’s too hard. I couldn’t possibly have the work and life that I seek if I go into academia,” I don’t think that’s true anymore. I know there are a lot of women who paved the way for me, and men for that matter. I remember my PhD advisors being fully present for their children. I’ve been very fortunate to be able to do the same thing. I spend lots of time taking care of them right now. But we love being out in nature hiking, skiing, and kayaking and enjoying what the Earth gives us.

      Sally: It’s also fun to see that “aha” moment in your children when they start to learn a little bit about science and they get the idea that you really can discover things by observing closely. I don’t know if they realize they benefit from having parents who think that way, but I think that also stays with them through their lives.

      Desirée: My son is just waiting for the phone call to be able to be part of MIT’s toy design class.

      Sally: That’s fantastic.

      Desirée: As an official evaluator. Yes.

      Sally: In the last five years or so, we’ve been through the pandemic. In practical terms, how you think about your work and your life, what do you do that has improved your life? I always hate the words of “work-life balance” because they’re so intermeshed, but just for the broader community, how have you thought about that?

      Desirée: I’ve been thinking about my Zoom world and how I am still able to do quite a bit of talking to my colleagues and advancing the research mission and talking to my students that I wouldn’t have been able to do. Even pre-pandemic, it would’ve been pretty hard. We’re all really trained to interact more efficiently through these media and mechanisms. I know how to give a good talk on Zoom, for better or worse. I think that that’s been something that has been great.

      In the context of environment, I think a lot of us—this might be cliched at this point—but realize that there are things that we don’t need to get up on a plane for and perhaps we can work on the computer and interact in that way. I think that’s awesome. There’s not much that can replace real, in-person human interaction, but if it means that you can juggle a few more balls in the air and have your family feel valued and yourself feel valued while you’re also valuing your work that thing that is igniting for you, I think that’s a great outcome.

      Sally: I think that’s right. Unfortunately, though, your kids may never know the meaning of a snow day.

      Desirée: You got it.

      Sally: They may be on a remote school whenever we would’ve been home building snow forts.

      Desirée: As a Mainer, I appreciate this fully, and almost had to write a note this year. Just let them go outside.

      Sally: Exactly, exactly. As we’re wrapping up, just thinking about the future of climate work and coming back to the science, I think you’ve thought a lot about what you’re doing and impact on the climate. I’m just wondering, as you look around MIT, where you think we might have some of the greatest impact? How do you think about what some of your colleagues are doing? Because I’m starting to think a lot about what MIT’s real footprint in this area is going to be.

      Desirée: The first thing I want to say is that I think for a long time, the world’s been looking for a silver bullet climate solution. That is not how we got into this problem and it’s not how we’re going to get out of it.

      Sally: Exactly.

      Desirée: We need a thousand BBs. Fortunately, at MIT, there are many thousands of minds that all have something to contribute. I like to impose, especially on the undergraduates and the graduate researchers, our student population out there, think, “How can I bring my talents to bear on this really most pressing and important problem that’s facing our world right now?” I would say just whatever your skill is and whatever your passion is, try to find a way to marry those things together and find a way to have impact.

      The other thing I would say is that we think really differently about problems. That’s what might be needed. If you’re going to break systems, you need to come at it from a different perspective or a different angle. Encouraging people to think differently, as this community does so well, I think is going to be an enormous asset in bringing some solutions to the climate change challenge.

      Sally: Excellent. If you look back over your career, and even earlier than when you became a faculty member, what do you think the best advice is that you’ve ever been given?

      Desirée: There’s so much. I’ve been fortunate to have a lot of really great mentors. What is the best piece of advice? I think this notion of balancing work and not work. I’ve gotten two really key points of advice. One is about travel. I think that ties into this concept of COVID and whether now we can actually go remote for a lot of things. It was from an MIT professor. He said, “You know, the biggest thing you can do to protect your personal life and your life with your family is to say no and travel less. Travel eats up time on the front, in the back, and it’s your family that’s paying the price for that, so be really judicious about your choices.” That was excellent advice for me.

      Another female faculty member of mine said, “You have to prioritize your family like they are an appointment on your calendar and it’s okay when you do that.” I think those have been really helpful for me as I navigate and struggle with my own very mission-oriented self where I want to keep working and put my focus there, but know that it’s okay to maybe go for a walk and talk to real people.

      Sally: Go wild.

      Desirée: Yes, that’s right.

      Sally: This issue, actually, of saying no, not only to travel but thinking about where you really place your efforts and when there’s a finite amount of time. When I think about this—and advising junior faculty in terms of service—every faculty member is going to be asked way more things than they’re going to want to do. Yet, their service to the department, service to the Institute, is important, not only for their advancement but in how we create a community. I always advise people to say yes to the things they’re truly interested in and they’re passionate about, and there will be enough of those things.

      Desirée: I have a flowchart for when to say yes and when to say no. Having an interest is at the top of the list and then feeling like you’re going to have an impact. That’s something I think, when we do this service at MIT, we really are able to have an impact. It’s not just the oldest people in the room that get to drive the bus. They’re really listening and want to hear that perspective from everybody.

      Sally: That’s excellent. Thanks again, Desirée. I really enjoyed that conversation. To our audience, thanks again for listening to Curiosity Unbounded. I very much hope you’ll all join us again. I’m Sally Kornbluth. Stay curious. More

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      Recycling plastics from research labs

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      In 2019, MIT’s Environment, Health, and Safety (EHS) Office collaborated with several research labs in the Department of Biology to determine the feasibility of recycling clean lab plastics. Based on early successes with waste isolation and plastics collection, EHS collaborated with GreenLabs Recycling, a local startup, to remove and recycle lab plastics from campus. It was a huge success.

      Today, EHS spearheads the campus Lab Plastics Recycling Program, and its EHS technicians regularly gather clean lab plastics from 212 MIT labs, transferring them to GreenLabs for recycling. Since its pilot stage, the number of labs participating in the program has grown, increasing the total amount of plastic gathered and recycled. In 2020, EHS collected 170 pounds of plastic waste per week from participating labs. That increased to 250 pounds per week in 2021. In 2022, EHS collected a total of 19,000 pounds, or 280 pounds of plastic per week.

      Joanna Buchthal, a research assistant with the MIT Media Lab, indicates that, prior to joining the EHS Lab Plastics Recycling Program, “our laboratory was continuously troubled by the substantial volume of plastic waste we produced and disheartened by our inability to recycle it. We frequently addressed this issue during our group meetings and explored various ways to repurpose our waste, yet we never arrived at a viable solution.”

      The EHS program now provides a solution to labs facing similar challenges with plastics use. After pickup and removal, the plastics are shredded and sold as free stock for injection mold product manufacturing. Buchthal says, “My entire lab is delighted to recycle our used tip boxes and transform them into useful items for other labs!”

      Recently, GreenLabs presented EHS with a three-gallon bucket that local manufacturers produced from 100 percent recycled plastic gathered from MIT labs. No fillers or additives were used in its production.

      Keeping it clean

      The now-growing EHS service and operation started as a pilot. In June 2019, MIT restricted which lab-generated items could be placed in single-stream recycling. MIT’s waste vendors were no longer accepting possibly contaminated waste, such as gloves, pipette tip boxes, bottles, and other plastic waste typically generated in biological research labs. The waste vendors would audit MIT’s single-stream recycling and reject items if they observed any contamination.

      Facing these challenges, the EHS coordinator for biology, John Fucillo, and several EHS representatives from the department met with EHS staff to brainstorm potential recycling solutions. Ensuring the decontamination of the plastic and coordinating its removal in an efficient way were the primary challenges for the labs, says Fucillo, who shared his and lab members’ concerns about the amount of plastic being thrown away with Mitch Galanek, EHS associate director for the Radiation Protection Program. Galanek says, “I immediately recognized the frustration expressed by John and other lab contacts as an opportunity to collaborate.”

      In July 2019, Galanek and a team of EHS technicians began segregating and collecting clean plastic waste from several labs within the biology department. EHS provided the labs with collection containers, and its technicians managed the waste removal over a four-month period, which produced a snapshot of the volume and type of waste generated. An audit of the waste determined that approximately 80 percent of the clean plastic waste generated was empty pipette tip boxes and conical tube racks.

      Based on these data, EHS launched a lab plastics recycling pilot program in November 2019. Labs from the Department of Biology and the Koch Institute for Integrative Cancer Research were invited to participate by recycling their clean, uncontaminated pipette tip boxes and conical tube racks. In addition to providing these labs with collection boxes and plastic liners, EHS also developed an online waste collection request tool to submit plastic pickup requests. EHS also collected the waste containers once they were full.

      Assistant professor of biology Seychelle Vos joined the pilot program as soon as she started her lab in fall 2019. Vos shares that “we already use pipette tips boxes that produce minimal waste, and this program allows us to basically recycle any part of the box except for tips. Pipette boxes are a significant source of plastic waste. This program helps us to be more environmentally and climate friendly.” 

      Given the increased participation in the program, EHS technician Dave Pavone says that plastic pickup is now a “regular component of our work schedules.”

      Together, the EHS technicians, commonly known as “techs,” manage the pickup of nearly 300 plastic collection containers across campus. Normand Desrochers, one of the EHS techs, shares that each morning he plans his pickup route “to get the job done efficiently.” While weekly pickups are a growing part of their schedules, Desrochers notes that everyone has been “super appreciative in what we do for their labs. And what we do makes their job that much easier, being able to focus on their research.”

      Barbara Karampalas, a lab operations manager within the Department of Biological Engineering, is one of many to express appreciation for the program: “We have a fairly large lab with 35 researchers, so we generate a lot of plastic waste … [and] knowing how many tip boxes we were using concerned me. I really appreciate the effort EHS has made to implement this program to help us reduce our impact on the environment.” The program also “makes people in the lab more aware of the issue of plastic waste and MIT’s commitment to reduce its impact on the environment,” says Karampalas.

      Looking ahead

      MIT labs continue to enthusiastically embrace the EHS Lab Plastics Recycling Program: 112 faculty across 212 labs are currently participating in the program. While only empty pipette tip boxes and conical tube racks are currently collected, EHS is exploring which lab plastics could be manufactured into products for use in the labs and repeatedly recycled. Specifically, the EHS Office is considering whether recycled plastic could be used to produce secondary containers for collecting hazardous waste and benchtop transfer containers used for collecting medical waste. As Seychelle notes, “Most plastics cannot be recycled in the current schemes due to their use in laboratory science.”

      Says Fucillo, “Our hope is that this program can be expanded to include other products which could be recycled from the wet labs.” John MacFarlane, research engineer and EHS coordinator for civil and environmental engineering, echoes this sentiment: “With plastic recycling facing economic constraints, this effort by the Institute deserves to be promoted and, hopefully, expanded.”

      “Having more opportunities to recycle ’biologically clean’ plastics would help us have a smaller carbon footprint,” agrees Vos. “We love this program and hope it expands further!”

      MIT labs interested in participating in the EHS Lab Plastics Recycling Program can contact pipetip@mit.edu to learn more. More

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      3 Questions: Leveraging carbon uptake to lower concrete’s carbon footprint

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      To secure a more sustainable and resilient future, we must take a careful look at the life cycle impacts of humanity’s most-produced building material: concrete. Carbon uptake, the process by which cement-based products sequester carbon dioxide, is key to this understanding.

      Hessam AzariJafari, the MIT Concrete Sustainability Hub’s deputy director, is deeply invested in the study of this process and its acceleration, where prudent. Here, he describes how carbon uptake is a key lever to reach a carbon-neutral concrete industry.

      Q: What is carbon uptake in cement-based products and how can it influence their properties?

      A: Carbon uptake, or carbonation, is a natural process of permanently sequestering CO2 from the atmosphere by hardened cement-based products like concretes and mortars. Through this reaction, these products form different kinds of limes or calcium carbonates. This uptake occurs slowly but significantly during two phases of the life cycle of cement-based products: the use phase and the end-of-life phase.

      In general, carbon uptake increases the compressive strength of cement-based products as it can densify the paste. At the same time, carbon uptake can impact the corrosion resistance of concrete. In concrete that is reinforced with steel, the corrosion process can be initiated if the carbonation happens extensively (e.g., the whole of the concrete cover is carbonated) and intensively (e.g., a significant proportion of the hardened cement product is carbonated). [Concrete cover is the layer distance between the surface of reinforcement and the outer surface of the concrete.]

      Q: What are the factors that influence carbon uptake?

      A: The intensity of carbon uptake depends on four major factors: the climate, the types and properties of cement-based products used, the composition of binders (cement type) used, and the geometry and exposure condition of the structure.

      In regard to climate, the humidity and temperature affect the carbon uptake rate. In very low or very high humidity conditions, the carbon uptake process is slowed. High temperatures speed the process. The local atmosphere’s carbon dioxide concentration can affect the carbon uptake rate. For example, in urban areas, carbon uptake is an order of magnitude faster than in suburban areas.

      The types and properties of cement-based products have a large influence on the rate of carbon uptake. For example, mortar (consisting of water, cement, and fine aggregates) carbonates two to four times faster than concrete (consisting of water, cement, and coarse and fine aggregates) because of its more porous structure.The carbon uptake rate of dry-cast concrete masonry units is higher than wet-cast for the same reason. In structural concrete, the process is made slower as mechanical properties are improved and the density of the hardened products’ structure increases.

      Lastly, a structure’s surface area-to-volume ratio and exposure to air and water can have ramifications for its rate of carbonation. When cement-based products are covered, carbonation may be slowed or stopped. Concrete that is exposed to fresh air while being sheltered from rain can have a larger carbon uptake compared to cement-based products that are painted or carpeted. Additionally, cement-based elements with large surface areas, like thin concrete structures or mortar layers, allow uptake to progress more extensively.

      Q: What is the role of carbon uptake in the carbon neutrality of concrete, and how should architects and engineers account for it when designing for specific applications?

      A: Carbon uptake is a part of the life cycle of any cement-based products that should be accounted for in carbon footprint calculations. Our evaluation shows the U.S. pavement network can sequester 5.8 million metric tons of CO2, of which 52 percent will be sequestered when the demolished concrete is stockpiled at its end of life.

      From one concrete structure to another, the percentage of emissions sequestered may vary. For instance, concrete bridges tend to have a lower percentage versus buildings constructed with concrete masonry. In any case, carbon uptake can influence the life cycle environmental performance of concrete.

      At the MIT Concrete Sustainability Hub, we have developed a calculator to enable construction stakeholders to estimate the carbon uptake of concrete structures during their use and end-of-life phases.

      Looking toward the future, carbon uptake’s role in the carbon neutralization of cement-based products could grow in importance. While caution should be taken in regards to uptake when reinforcing steel is embedded in concrete, there are opportunities for different stakeholders to augment carbon uptake in different cement-based products.

      Architects can influence the shape of concrete elements to increase the surface area-to-volume ratio (e.g., making “waffle” patterns on slabs and walls, or having several thin towers instead of fewer large ones on an apartment complex). Concrete manufacturers can adjust the binder type and quantity while delivering concrete that meets performance requirements. Finally, industrial ecologists and life-cycle assessment practitioners need to work on the tools and add-ons to make sure the impact of carbon is well captured when assessing the potential impacts of cement-based products in buildings and infrastructure systems.

      Currently, the cement and concrete industry is working with tech companies as well as local, state, and federal governments to lower and subsidize the code of carbon capture sequestration and neutralization. Accelerating carbon uptake where reasonable could be an additional lever to neutralize the carbon emissions of the concrete value chain.

      Carbon uptake is one more piece of the puzzle that makes concrete a sustainable choice for building in many applications. The sustainability and resilience of the future built environment lean on the use of concrete. There is still much work to be done to truly build sustainably, and understanding carbon uptake is an important place to begin. More

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      MIT Center for Real Estate advances climate and sustainable real estate research agenda

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      Real estate investors are increasingly putting sustainability at the center of their decision-making processes, given the close association between climate risk and real estate assets, both of which are location-based.

      This growing emphasis comes at a time when the real estate industry is one of the biggest contributors to global warming; its embodied and operational carbon accounts for more than one-third of total carbon emissions. More stringent building decarbonization regulations are putting pressure on real estate owners and investors, who must invest heavily to retrofit their buildings or pay “carbon penalties” and see their assets lose value.

      The impacts of acute and chronic climate risks — flooding, hurricanes, wildfires, droughts, sea-level rise, and extreme weather — are becoming more salient. Action across all areas of the real estate sector will be required to limit the social and economic risks arising from the climate crisis. But what business and policy levers are most effective at guiding the industry toward a more sustainable future?

      The MIT Center for Real Estate (MIT/CRE) believes that the real estate industry can be a catalyst for the rapid mobilization of a global transition to a greener society. Since its inception in 1983, MIT/CRE has focused on the physical aspect of real estate, especially the development industry, and how the built environment gets produced and changed.

      “The real estate industry is now at the critical moment to address the climate crisis. That is why our center initiated this major research agenda on climate and real estate two years ago,” says William Wheaton, a former director of MIT/CRE and professor emeritus in MIT’s Department of Economics, who is leading a research project on the impact of flood risks in real estate markets.

      Producing high-quality research to support climate actions

      The work of scientists and practitioners responding to the climate crisis is often bifurcated into mitigation or adaptation responses. Mitigation seeks to reduce the severity of the climate crisis by addressing emissions, while adaptation efforts seek to anticipate the most severe effects of the crisis and minimize potential risks to people and the built environment.

      The fundamental nature of the real estate industry — location-based and capital-intensive — enables potential meaningful action for both mitigation and adaptation interventions. Exploring both avenues, MIT/CRE faculty and researchers have published academic papers exploring how chronic climate events such as extreme temperatures lower people’s expressed happiness and also disrupt habits of daily life; and how acute climate events such as hurricanes damage the built environment and decrease the financial value of real estate.

      “This ongoing research production centers on industry’s imperative to take action quickly, the real losses resulting from inaction, and the potential social and business value creation for early adopters of more sustainable practices,” says Siqi Zheng, a co-author of those papers, who is the MIT/CRE faculty director and the STL Champion Professor of Urban and Real Estate Sustainability.

      Building a global community of academics and industry leaders

      In addition to sponsoring research and related courses, MIT/CRE has created a global network of researchers and industry leaders, centered around sharing ideas and experience to quickly scale more sustainable practices, such as building decarbonization and circular economy in real estate, as well as climate risk modeling and pricing. Collaborating with industry leaders from the investment and real estate sector, such as EY, Veris Residential, Moody’s Analytics, Colliers, Finvest, KPF, Taurus Investment Holdings, Climate Alpha, and CRE alumnus Paul Clayton SM ’02, MIT/CRE blends real-world experiences and questions with applied data and projects to create a “living lab” for MIT/CRE researchers to conduct climate research.

      At an inaugural symposium on climate and real estate held at MIT in December 2022, more than a dozen scholars presented papers on the intersection of real estate and sustainability, which will form the basis of a special issue on climate change and real estate in the Journal of Regional Science. A “fireside chat” connected scholars and industry leaders in practical conversations about how to use research to aid practitioners.

      “Dissemination of research is critical to the success of our efforts to address climate change in the real estate industry,” says David Geltner, post-tenure professor of real estate finance and former director of  MIT/CRE, whose research group is working on climate risks and commercial real estate. “If we produce excellent research but it is cloistered in academic journals, it does no one any good. Similarly, if we do not work with collaborators to focus our research, we run the risk of investigating levers to reduce emissions that are of no use to practitioners.”

      Juan Palacios, coordinator of MIT/CRE’s climate and real estate research team, emphasizes that industry collaboration creates a two-way sharing of information that refines how research is being conducted at the center and ensures that it has positive impact.

      “More and more real estate investors and market players are putting sustainability at the center of their investment approach,” says Zheng. “A broad range of stakeholders (investors, regulators, insurers, and the public) have started to understand that long-term profitability cannot be achieved without embracing multiple dimensions of sustainability such as climate, wealth inequality, public health, and social welfare. Because of its unique relationship with industry collaborators and its place in the MIT innovation ecosystem, MIT/CRE has a responsibility and the opportunity to champion multiple pathways toward greater sustainability in the real estate industry.” More

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      MIT-led teams win National Science Foundation grants to research sustainable materials

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      Three MIT-led teams are among 16 nationwide to receive funding awards to address sustainable materials for global challenges through the National Science Foundation’s Convergence Accelerator program. Launched in 2019, the program targets solutions to especially compelling societal or scientific challenges at an accelerated pace, by incorporating a multidisciplinary research approach.

      “Solutions for today’s national-scale societal challenges are hard to solve within a single discipline. Instead, these challenges require convergence to merge ideas, approaches, and technologies from a wide range of diverse sectors, disciplines, and experts,” the NSF explains in its description of the Convergence Accelerator program. Phase 1 of the award involves planning to expand initial concepts, identify new team members, participate in an NSF development curriculum, and create an early prototype.

      Sustainable microchips

      One of the funded projects, “Building a Sustainable, Innovative Ecosystem for Microchip Manufacturing,” will be led by Anuradha Murthy Agarwal, a principal research scientist at the MIT Materials Research Laboratory. The aim of this project is to help transition the manufacturing of microchips to more sustainable processes that, for example, can reduce e-waste landfills by allowing repair of chips, or enable users to swap out a rogue chip in a motherboard rather than tossing out the entire laptop or cellphone.

      “Our goal is to help transition microchip manufacturing towards a sustainable industry,” says Agarwal. “We aim to do that by partnering with industry in a multimodal approach that prototypes technology designs to minimize energy consumption and waste generation, retrains the semiconductor workforce, and creates a roadmap for a new industrial ecology to mitigate materials-critical limitations and supply-chain constraints.”

      Agarwal’s co-principal investigators are Samuel Serna, an MIT visiting professor and assistant professor of physics at Bridgewater State University, and two MIT faculty affiliated with the Materials Research Laboratory: Juejun Hu, the John Elliott Professor of Materials Science and Engineering; and Lionel Kimerling, the Thomas Lord Professor of Materials Science and Engineering.

      The training component of the project will also create curricula for multiple audiences. “At Bridgewater State University, we will create a new undergraduate course on microchip manufacturing sustainability, and eventually adapt it for audiences from K-12, as well as incumbent employees,” says Serna.

      Sajan Saini and Erik Verlage of the MIT Department of Materials Science and Engineering (DMSE), and Randolph Kirchain from the MIT Materials Systems Laboratory, who have led MIT initiatives in virtual reality digital education, materials criticality, and roadmapping, are key contributors. The project also includes DMSE graduate students Drew Weninger and Luigi Ranno, and undergraduate Samuel Bechtold from Bridgewater State University’s Department of Physics.

      Sustainable topological materials

      Under the direction of Mingda Li, the Class of 1947 Career Development Professor and an Associate Professor of Nuclear Science and Engineering, the “Sustainable Topological Energy Materials (STEM) for Energy-efficient Applications” project will accelerate research in sustainable topological quantum materials.

      Topological materials are ones that retain a particular property through all external disturbances. Such materials could potentially be a boon for quantum computing, which has so far been plagued by instability, and would usher in a post-silicon era for microelectronics. Even better, says Li, topological materials can do their job without dissipating energy even at room temperatures.

      Topological materials can find a variety of applications in quantum computing, energy harvesting, and microelectronics. Despite their promise, and a few thousands of potential candidates, discovery and mass production of these materials has been challenging. Topology itself is not a measurable characteristic so researchers have to first develop ways to find hints of it. Synthesis of materials and related process optimization can take months, if not years, Li adds. Machine learning can accelerate the discovery and vetting stage.

      Given that a best-in-class topological quantum material has the potential to disrupt the semiconductor and computing industries, Li and team are paying special attention to the environmental sustainability of prospective materials. For example, some potential candidates include gold, lead, or cadmium, whose scarcity or toxicity does not lend itself to mass production and have been disqualified.

      Co-principal investigators on the project include Liang Fu, associate professor of physics at MIT; Tomas Palacios, professor of electrical engineering and computer science at MIT and director of the Microsystems Technology Laboratories; Susanne Stemmer of the University of California at Santa Barbara; and Qiong Ma of Boston College. The $750,000 one-year Phase 1 grant will focus on three priorities: building a topological materials database; identifying the most environmentally sustainable candidates for energy-efficient topological applications; and building the foundation for a Center for Sustainable Topological Energy Materials at MIT that will encourage industry-academia collaborations.

      At a time when the size of silicon-based electronic circuit boards is reaching its lower limit, the promise of topological materials whose conductivity increases with decreasing size is especially attractive, Li says. In addition, topological materials can harvest wasted heat: Imagine using your body heat to power your phone. “There are different types of application scenarios, and we can go much beyond the capabilities of existing materials,” Li says, “the possibilities of topological materials are endlessly exciting.”

      Socioresilient materials design

      Researchers in the MIT Department of Materials Science and Engineering (DMSE) have been awarded $750,000 in a cross-disciplinary project that aims to fundamentally redirect materials research and development toward more environmentally, socially, and economically sustainable and resilient materials. This “socioresilient materials design” will serve as the foundation for a new research and development framework that takes into account technical, environmental, and social factors from the beginning of the materials design and development process.

      Christine Ortiz, the Morris Cohen Professor of Materials Science and Engineering, and Ellan Spero PhD ’14, an instructor in DMSE, are leading this research effort, which includes Cornell University, the University of Swansea, Citrine Informatics, Station1, and 14 other organizations in academia, industry, venture capital, the social sector, government, and philanthropy.

      The team’s project, “Mind Over Matter: Socioresilient Materials Design,” emphasizes that circular design approaches, which aim to minimize waste and maximize the reuse, repair, and recycling of materials, are often insufficient to address negative repercussions for the planet and for human health and safety.

      Too often society understands the unintended negative consequences long after the materials that make up our homes and cities and systems have been in production and use for many years. Examples include disparate and negative public health impacts due to industrial scale manufacturing of materials, water and air contamination with harmful materials, and increased risk of fire in lower-income housing buildings due to flawed materials usage and design. Adverse climate events including drought, flood, extreme temperatures, and hurricanes have accelerated materials degradation, for example in critical infrastructure, leading to amplified environmental damage and social injustice. While classical materials design and selection approaches are insufficient to address these challenges, the new research project aims to do just that.

      “The imagination and technical expertise that goes into materials design is too often separated from the environmental and social realities of extraction, manufacturing, and end-of-life for materials,” says Ortiz. 

      Drawing on materials science and engineering, chemistry, and computer science, the project will develop a framework for materials design and development. It will incorporate powerful computational capabilities — artificial intelligence and machine learning with physics-based materials models — plus rigorous methodologies from the social sciences and the humanities to understand what impacts any new material put into production could have on society. More

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      Engaging enterprises with the climate crisis

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      Almost every large corporation is committed to achieving net zero carbon emissions by 2050 but lacks a roadmap to get there, says John Sterman, professor of management at MIT’s Sloan School of Management, co-director of the MIT Sloan Sustainability Initiative, and leader of its Climate Pathways Project. Sterman and colleagues offer a suite of well-honed strategies to smooth this journey, including a free global climate policy simulator called En-ROADS deployed in workshops that have educated more than 230,000 people, including thousands of senior elected officials and leaders in business and civil society around the world. 

      Running on ordinary laptops, En-ROADS examines how we can reduce carbon emissions to keep global warming under 2 degrees Celsius, Sterman says. Users, expert or not, can easily explore how dozens of policies, such as pricing carbon and electrifying vehicles, can affect hundreds of factors such as temperature, energy prices, and sea level rise. 

      En-ROADs and related work on climate change are just one thread in Sterman’s decades of research to integrate environmental sustainability with business decisions. 

      “There’s a fundamental alignment between a healthy environment, a healthy society, and a healthy economy,” he says. “Destroy the environment and you destroy the economy and society. Likewise, hungry, ill-housed, insecure people, lacking decent jobs and equity in opportunity, will catch the last fish and cut the last tree, destroying the environment and society. Unfortunately, a lot of businesses still see the issue as a trade-off — if we focus on the environment, it will hurt our bottom line; if we improve working conditions, it will raise our labor costs. That turns out not to be true in many, many cases. But how can we help people understand that fundamental alignment? That’s where simulation models can play a big role.”

      Play video

      Learning with management flight simulators 

      “My original field is system dynamics, a method for understanding the complex systems in which we’re embedded—whether those are organizations, companies, markets, society as a whole, or the climate system” Sterman says. “You can build these wonderful, complex simulation models that offer important insights and insight into high-leverage policies so that organizations can make significant improvements.” 

      “But those models don’t do any good at all unless the folks in those organizations can learn for themselves about what those high-leverage opportunities are,” he emphasizes. “You can show people the best scientific evidence, the best data, and it’s not necessarily going to change their minds about what they ought to be doing. You’ve got to create a process that helps smart but busy people learn how they can improve their organizations.” 

      Sterman and his colleagues pioneered management flight simulators — which, like aircraft flight simulators, offer an environment in which you can make decisions, seeing what works and what doesn’t, at low cost with no risk. 

      “People learn best from experience and experiment,” he points out. “But in many of the most important settings that we face today, experience comes too late to be useful, and experiments are impossible. In such settings, simulation becomes the only way people can learn for themselves and gain the confidence to change their behavior in the real world.” 

      “You can’t learn to fly a new jetliner by watching someone else; to learn, one must be at the controls,” Sterman emphasizes. “People don’t change deeply embedded beliefs and behaviors just because somebody tells them that what they’re doing is harmful and there are better options. People have to learn for themselves.”

      Play video

      Learning the business of sustainability 

      His longstanding “laboratory for sustainable business” course lets MIT Sloan School students learn the state of the art in sustainability challenges — not just climate change but microplastics, water shortages, toxins in our food and air, and other crises. As part of the course, students work in teams with organizations on real sustainability challenges. “We’ve had a very wide range of companies and other organizations participate, and many of them come back year after year,” Sterman says. 

      MIT Sloan also offers executive education in sustainability, in both open enrollment and customized programs. “We’ve had all kinds of folks, from all over the world and every industry” he says. 

      In his opening class for executive MBAs, he polls attendees to ask if sustainability is a material issue for their companies, and how actively those companies are addressing that issue. Almost all of the attendees agree that sustainability is a key issue, but nearly all say their companies are not doing enough, with many saying they “comply with all applicable laws and regulations.” 

      “So there’s a huge disconnect,” Sterman points out. “How do you close that gap? How do you take action? How do you break the idea that if you take action to be more sustainable it will hurt your business, when in fact it’s almost always the other way around? And then how can you make the change happen, so that what you’re doing will get implemented and stick?” 

      Simulating policies for sustainability 

      Management flight simulators that offer active learning can provide crucial guidance. In the case of climate change, En-ROADs presents a straightforward interface that lets users adjust sliders to experiment with actions to try to bring down carbon emissions. “Should we have a price on carbon?” Sterman asks. “Should we promote renewables? Should we work on methane? Stop deforestation? You can try anything you want. You get immediate feedback on the likely consequences of your decisions. Often people are surprised as favorite policies — say, planting trees — have only minor impact on global warming. (In the case of trees, because it takes so long for the trees to grow).”

      One En-ROADS alumnus works for a pharmaceutical company that set a target of zero net emissions by mid-century. But, as often observed, measures proposed at the senior corporate level were often resisted by the operating units. The alumnus attacked the problem by bringing workshops with simulations and other sustainability tools to front-line employees in a manufacturing plant he knew well. He asked these employees how they thought they could reduce carbon emissions and what they needed to do so. 

      “It turns out that they had a long list of opportunities to reduce the emissions from this plant,” Sterman says. “But they didn’t have any support to get it done. He helped their ideas get that support, get the resources, come up with ways to monitor their progress, and ways to look for quick wins. It’s been highly successful.” 

      En-ROADS helps people understand that process improvement activity takes resources; you might need to take some equipment offline temporarily, for example, to upgrade or improve it. “There’s a little bit of a worse-before-better trade-off,” he says. “You need to be prepared. The active learning, the use of the simulators, helps people prepare for that journey and overcome the barriers that they will face.” 

      Interactive workshops with En-ROADS and other sustainability tools also brought change to another large corporation, HSBC Bank U.S.A. Like many other financial institutions, HSBC has committed to significantly cut its emissions, but many employees and executives didn’t understand why or what that would entail. For instance, would the bank give up potential business in carbon-intensive industries? 

      Brought to more than 1,000 employees, the En-ROADS workshops let employees surface concerns they might have about continuing to be successful while addressing climate concerns. “It turns out in many cases, there isn’t that much of a trade-off,” Sterman remarks. “Fossil energy projects, for example, are extremely risky. And there are opportunities to improve margins in other businesses where you can help cut their carbon footprint.” 

      The free version of En-ROADS generally satisfies the needs of most organizations, but Sterman and his partners also can augment the model or develop customized workshops to address specific concerns. 

      People who take the workshops emerge with a greater understanding of climate change and its effects, and a deeper knowledge of the high-leverage opportunities to cut emissions. “Even more importantly, they come out with a greater sense of urgency,” he says. “But they also come out with an understanding that it’s not too late. Time is short, but what we do can still make a difference.”  More

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      in Security

      Titanic robots make farming more sustainable

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      There’s a lot riding on farmers’ ability to fight weeds, which can strangle crops and destroy yields. To protect crops, farmers have two options: They can spray herbicides that pollute the environment and harm human health, or they can hire more workers.

      Unfortunately, both choices are becoming less tenable. Herbicide resistance is a growing problem in crops around the world, while widespread labor shortages have hit the agricultural sector particularly hard.

      Now the startup FarmWise, co-founded by Sebastien Boyer SM ’16, is giving farmers a third option. The company has developed autonomous weeding robots that use artificial intelligence to cut out weeds while leaving crops untouched.

      The company’s first robot, fittingly called the Titan — picture a large tractor that makes use of a trailer in lieu of a driver’s seat — uses machine vision to distinguish weeds from crops including leafy greens, cauliflower, artichokes, and tomatoes while snipping weeds with sub-inch precision.

      About 15 Titans have been roaming the fields of 30 large farms in California and Arizona for the last few years, providing weeding as a service while being directed by an iPad. Last month, the company unveiled its newest robot, Vulcan, which is more lightweight and pulled by a tractor.

      “We have growing population, and we can’t expand the land or water we have, so we need to drastically increase the efficiency of the farming industry,” Boyer says. “I think AI and data are going to be major players in that journey.”

      Finding a road to impact

      Boyer came to MIT in 2014 and earned masters’ degrees in technology and policy as well as electrical engineering and computer science over the next two years.

      “What stood out is the passion that my classmates had for what they did — the drive and passion people had to change the world,” Boyer says.

      As part of his graduate work, Boyer researched machine learning and machine vision techniques, and he soon began exploring ways to apply those technologies to environmental problems. He received a small amount of funding from MIT Sandbox to further develop the idea.

      “That helped me make the decision to not take a real job,” Boyer recalls.

      Following graduation, he and FarmWise co-founder Thomas Palomares, a graduate of Stanford University whom Boyer met in his home country of France, began going to farmers’ markets, introducing themselves to small farmers and asking for tours of their farms. About one in three farmers were happy to show them around. From there they’d ask for referrals to larger farmers and service providers in the industry.

      “We realized agriculture is a large contributor of both emissions and, more broadly, to the negative impact of human activities on the environment,” Boyer says. “It also hasn’t been as disrupted by software, cloud computing, AI, and robotics as other industries. That combination really excites us.”

      Through their conversations, the founders learned herbicides are becoming less effective as weeds develop genetic resistance. The only alternative is to hire more workers, which itself was becoming more difficult for farmers.

      “Labor is extremely tight,” says Boyer, adding that bending over and weeding for 10 hours a day is one of the hardest jobs out there. “The labor supply is shrinking if not collapsing in the U.S., and it’s a worldwide trend. That has real environmental implications because of the tradeoff [between labor and herbicides].”

      The problem is especially acute for farmers of specialty crops, including many fruits, vegetables, and nuts, which grow on smaller farms than corn and soybean and each require slightly different growing practices, limiting the effectiveness of many technical and chemical solutions.

      “We don’t harvest corn by hand today, but we still harvest lettuces and nuts and apples by hand,” Boyer says.

      The Titan was built to complement field workers’ efforts to grow and maintain crops. An operator directs it using an iPad, walking alongside the machine and inspecting progress. Both the Titan and Vulcan are powered by an AI that directs hundreds of tiny blades to snip out weeds around each crop. The Vulcan is controlled directly from the tractor cab, where the operator has a touchscreen interface Boyer compares to those found in a Tesla.

      With more than 15,000 commercial hours under its belt, FarmWise hopes the data it collects can be used for more than just weeding in the near future.

      “It’s all about precision,” Boyer says. “We’re going to better understand what the plant needs and make smarter decisions for each one. That will bring us to a point where we can use the same amount of land, much less water, almost no chemicals, much less fertilizer, and still produce more food than we’re producing today. That’s the mission. That’s what excites me.”

      Weeding out farming challenges

      A customer recently told Boyer that without the Titan, he would have to switch all of his organic crops back to conventional because he couldn’t find enough workers.

      “That’s happening with a lot of customers,” Boyer says. “They have no choice but to rely on herbicides. Acres are staying organic because of our product, and conventional farms are reducing their use of herbicides.”

      Now FarmWise is expanding its database to support weeding for six to 12 new crops each year, and Boyer says adding new crops is getting easier and easier for its system.

      As early partners have sought to expand their deployments, Boyer says the only thing limiting the company’s growth is how fast it can build new robots. FarmWise’s new machines will begin being deployed later this year.

      Although the hulking Titan robots are the face of the company today, the founders hope to leverage the data they’ve collected to further improve farming operations.

      “The mission of the company is to turn AI into a tool that is as reliable and dependable as GPS is now in the farming industry,” Boyer says. “Twenty-five years ago, GPS was a very complicated technology. You had to connect to satellites and do some crazy computation to define your position. But a few companies brought GPS to a new level of reliability and simplicity. Today, every farmer in the world uses GPS. We think AI can have an even deeper impact than GPS has had on the farming industry, and we want to be the company that makes it available and easy to use for every farmer in the world.” More