Civil and environmental engineering

MIT researchers developed a new method to model how climate change will impact the number of “outdoor days” and found that Southern states in the U.S. will lose a significant number of outdoor days, reports Kristin Toussaint for Fast Company. Prof. Elfatih Eltahir explains that the concept of outdoor days is, “an attempt for me to bring the issue of climate change home. When someone tells you global temperatures are going to increase by 3 degrees, that’s one thing. If someone tells you that your outdoor days will be dropping by 20% or 30%, that’s another thing.”

Prof. Admir Masic speaks with New York Times reporter Amos Zeeberg about his research studying the benefits of lime clasts – a material used in ancient Roman infrastructure. According to Masic’s research, “these lime clasts were actually reservoirs of calcium that helped fill in cracks, making the concrete self-healing,” writes Zeeberg. “As cracks formed, water would seep in and dissolve the calcium in the lime, which then formed solid calcium carbonate, essentially creating new rock that filled in the crack.”

Prof. Yossi Sheffi speaks with Boston Globe reporter Hiawatha Bray about the challenges and risks posed by implementing automation, amid the dockworkers strike. Sheffi emphasized the importance of gradually introducing new technologies and offering workers training to work with AI. “There will be new jobs,” says Sheffi. “And we want the current workers to be able to get these new jobs.” 

Prof. Yossi Sheffi speaks with Associated Press reporter Cathy Bussewitz about how automation could impact the workforce, specifically dockworkers. “You cannot bet against the march of technology,” says Sheffi. “You cannot ban automation, because it will creep up in other places... The trick is to make it over time, not do it haphazardly.” 

MIT researchers have developed a new filtration material, created from natural substances, that could be used to remove “forever chemicals” like PFAS and heavy metals from drinking water, reports Matt Fortin for NBC Boston. "That's a huge advantage of our system, which is that we are using fully renewable, biodegradable and compatible material to resolve this long-lasting problem," explains postdoc Yilin Zhang. 

MIT researchers have developed a new filtration material capable of removing PFAS and heavy metals from water while possessing “antimicrobial properties that prevent the filters from becoming fouled over time,” reports Sujita Sinha for Interesting Engineering. “By combining silk and cellulose and using a method that aligns the silk molecules into nanofibrils, [the researchers] created a hybrid material with unique properties perfect for water filtration,” explains Sinha. 

Prof. Charles Harvey is among the scientists who “warn that [carbon] removal technologies aren’t sophisticated enough nor coming online fast enough to reduce emissions to the level we need them to,” reports Tristram Korten for Fast Company. 

Prof. Desirée Plata and her research team have designed “a kind of clay that mimics the behavior of underwater microorganisms to break down methane into water and carbon dioxide,” reports Ivy Scott for The Boston Globe. “The estimates are that you could save a half a degree of warming by 2100 if you cut human-made methane emissions in half, so that’s a pretty big deal,” says Plata. “It’s the only greenhouse gas that can do that. It’s just a question of whether or not we’ll start to see people doing that ... [regionally] and in Massachusetts.”

MIT engineers have developed a new adhesive, low-cost hydrogel that can stop fibrosis often experienced by people with pacemakers and other medical devices, reports for Maria Bolevich Interesting Engineering. “These findings may offer a promising strategy for long-term anti-fibrotic implant–tissue interfaces,” explains Prof. Xuanhe Zhao. 

Researchers at MIT have developed a new measure called “outdoor days,” which describes the number of days per year in which temperatures are comfortable enough for outdoor activities in specific locations around the world, reports Lebawit Lily Girma for Bloomberg News. “Changes in the number of outdoor days will impact directly how people around the world feel climate change,” says Prof. Elfatih Eltahir.

MIT researchers have developed a new tool to quantify how climate change will impact the number of “outdoor days” where people can comfortably spend time outside in specific locations around the world, reports Tim DeChant for TechCrunch. “The MIT tool is a relatable application of a field of study known as climate scenario analysis, a branch of strategic planning that seeks to understand how climate change will impact various regions and demographics,” writes De Chant.

Former postdoc Leah Ellis speaks with GBH All Things Considered host Arun Rath about   Sublime Systems, an MIT startup she co-founded that aims to produce carbon-free cement to combat climate change. “Sublime Systems and this technology spun out of my postdoctoral work at MIT,” says Ellis. “My co-founder and I are both electric chemists, so we have experience with battery technologies and electrochemical systems. Our idea was thinking about how we might use renewable energy—which we know has become more abundant, inexpensive and available—to eliminate the CO2 emissions from cement.”

Sublime Systems, an MIT startup, is developing new technology to fully decarbonize the cement manufacturing process, reports Adele Peters for Fast Company. “Instead of using heat to break down rocks for cement, the startup uses chemistry to dissolve them, and then blends the components back together into what it calls ‘Sublime Cement,’” explains Peters. “The process can replace limestone with other minerals, including rocks found at high volumes in industrial waste, so it’s also possible to eliminate the emissions from limestone.”

Lynn Yamada Davis '77, a TikTok creator known as “the internet’s grandma” for sharing her “quirky, educational cooking content,” has died at age 77, reports Morgan Sung for TechCrunch. “Before she was a content creator, Davis was an accomplished engineer — a feat for women of color at the time,” writes Sung.

Lynn Yamada Davis '77, “a TikTok creator who brought joy to millions of people with her zany style and cooking tips on her account, Cooking With Lynja,” has died at 67, writes Claire Moses for The New York Times. Before becoming a TikTok star, Davis “had this whole chapter as a groundbreaking female engineer, and she was very proud of that,” her daughter Hannah Shofet explained. Her son, Sean Davis noted that the final chapter of her life spent travelling the world, meeting people and cooking and eating amazing food was “exactly how she would have wanted it to be written.”