News & Stories

Encouraging solar energy adoption in rural India

More than 73 million households in remote areas of the world get electricity not from a conventional power grid but rather from sources such as solar lanterns, solar home systems (SHSs) that can power several devices, and local solar-based microgrids. Such off-grid devices and systems provide life-changing services to people who are off centralized electricity […]

Homing in on longer-lasting perovskite solar cells

Materials called perovskites are widely heralded as a likely replacement for silicon as the material of choice for solar cells, but their greatest drawback is their tendency to degrade relatively rapidly. Over recent years, the usable lifetime of perovskite-based cells has gradually improved from minutes to months, but it still lags far behind the decades […]

Sustainable solutions at home and abroad

Arnav Patel is a self-described sustainability enthusiast. Working on solutions related to climate change has been a central thread woven throughout his time at MIT. As a first-year student, he was initially drawn to mechanical engineering because he wanted to keep his options open. “I felt like mechanical engineering is that perfect niche where there’s […]

Cooling homes without warming the planet

As incomes in developing countries continue to rise, demand for air conditioners is expected to triple by 2050. The surge will multiply what is already a major source of greenhouse gas emissions: Air conditioning is currently responsible for almost 20 percent of electricity use in buildings around the world. Now the startup Transaera is working […]

MIT engineers make filters from tree branches to purify drinking water

The interiors of nonflowering trees such as pine and ginkgo contain sapwood lined with straw-like conduits known as xylem, which draw water up through a tree’s trunk and branches. Xylem conduits are interconnected via thin membranes that act as natural sieves, filtering out bubbles from water and sap. MIT engineers have been investigating sapwood’s natural […]

Transforming lives by providing safe drinking water

As a child, Susan Murcott ’90 SM ’92 saw firsthand the long-term impact that water- and food-borne illness can have on people. At age 16, her maternal grandmother contracted polio, which can be transmitted through direct contact with someone infected with the virus or, occasionally, through contaminated food and water. As a result of the […]

Traveling the world for global health solutions

As a kid, Andrea Orji always loved it when her grandpa would visit from Nigeria. He would share stories about his home to teach Orji, a Texas native, about her family’s heritage. But while she and her family attended school and work, her grandpa remained at the house, frequently alone. She could tell he longed […]

A new goal for soccer: Improving attitudes toward refugees

Across the globe, 26 million people have been displaced from their home countries by civil war, drought, political persecution, and other crises. At the same, attitudes against refugees are hardening in many countries; a 2018 survey found that 40 percent of Kenyans have heard that refugees are a security threat, and 45 percent don’t think […]

Could we recycle plastic bags into fabrics of the future?

In considering materials that could become the fabrics of the future, scientists have largely dismissed one widely available option: polyethylene. The stuff of plastic wrap and grocery bags, polyethylene is thin and lightweight, and could keep you cooler than most textiles because it lets heat through rather than trapping it in. But polyethylene would also […]

3 Questions: Richard Samuels on Japan’s 3.11 triple disaster and its impact 10 years later

Ten years ago, on March 11, 2011, Japan was struck by the most powerful earthquake in its recorded history. Of 9.1 magnitude by many accounts, the earthquake occurred off the Pacific coast of Tohoku and triggered a tsunami and meltdown at the Fukushima Daiichi Nuclear Power Plant. Nearly 20,000 Japanese — and most of their […]