Water

Forbes contributor David Bressan writes that a new study co-authored by MIT researchers finds that images taken by the Perseverance rover show that Mars’ Jezero crater was once a lake. “The fine-grained clay and carbonate layers deposited in the fossil lake are capped by a diamict, a sedimentary rock consisting of a mix of large and small boulders,” writes Bressan. “Scientists think the boulders were picked up tens of miles upstream and deposited into the former lakebed by episodic flash floods, suggesting a catastrophic climate change in Mars' distant past.”

Prof. Tanja Bosak and Prof. Benjamin Weiss speak with Popular Science reporter Kate Baggaley about how their analysis of images captured by NASA’s Perseverance rover found that the Jezero crater was once a lake and river delta. “The geological history of the Jezero crater could help scientists understand how the Red Planet changed from being wet and possibly habitable into a harsh desert world,” writes Baggaley. “Definitely we hit the jackpot here,” says Weiss, 

Space.com reporter Mike Wall writes that a new study co-authored by MIT scientists finds that the Jezero crater on Mars previously hosted a big lake and river delta. “The newly analyzed photos may provide an intriguing glimpse” into Mars’ transformation to a dry landscape,” writes Wall.

Researchers from MIT and other institutions analyzed images captured by NASA’s Perseverance rover and found that Mars’ Jezero crater was a lake 3.7 billion years ago, reports Ashley Strickland for CNN. “The new information shows the importance of sending rovers to explore the surface of Mars,” writes Strickland. “Previous images captured by orbiters had shown that this outcrop resembled the kind of fan-shaped river deltas we have on Earth. Perseverance's images show definitive proof of the river delta's existence.”

MIT researchers have created a new filter from tree branches that could provide an inexpensive, biodegradable, low-tech option for water purification, writes Shaena Montanari for Popular Science. “We hope that our work empowers such people to further develop and commercialize xylem water filters tailored to local needs to benefit communities around the world,” says Prof. Rohit Karnik.

UPI reporter Brooks Hays writes that MIT researchers have created a new water filter from tree branches that can remove bacteria. “The filter takes advantage of the natural sieving abilities of xylem -- thin, interconnected membranes found in the sapwood branches of pine, ginkgo and other nonflowering trees,” writes Hays.

Scientific American reporter Prachi Patel spotlights how MIT researchers have developed a solar-powered system that can extract drinkable water from the air. “The $100 setup yields almost six liters an hour in the lab and about half of that outdoors,” writes Patel. 

Axios reporter Bryan Walsh highlights how MIT researchers have developed a new solar-powered device that can extract drinkable water from the air and “could help alleviate water scarcity in some of the world's driest regions.” Walsh notes that the new design “makes use of a more common material called zeolite, doubling its capacity to generate water.”
 

Prof. Fadel Adib has created a new underwater device that not only broadcasts and receives sound, but is also powered by sound, reports The Economist. In the future, Adib and his colleagues hope the device could be used to “transmit information about water temperature, acidity and salinity.”

MIT researchers have developed a solar-powered system that is able to extract drinkable water from dry air, reports Layal Liverpool for New Scientist. “In areas where water scarcity is a problem, it’s important to consider different technologies which provide water, particularly as climate change will exacerbate many water scarcity issues,” says graduate student Alina LaPotin.

John Yang reports for PBS NewsHour about technologies to harvest fog to secure the world’s water supply, including one system designed by Prof. Kripa Varanasi to collect water from power plant cooling towers. Varanasi and his team “discovered that zapping air rich in fog with a beam of electrically charged particles draws the droplets toward the mesh, dramatically increasing its ability to collect water,” says Yang.

CBS This Morning correspondent Nikki Battiste visits MIT to learn more about a device developed by MIT researchers that uses wireless signals to detect food contamination. “We hope to be able to build a portable device that a person can take with them when they're trying to buy something from a supermarket or from a farmer's market,” explains Prof. Fadel Adib.

Fast Company reporter Jesus Diaz writes that MIT researchers have developed a computer model that shows that rising water temperatures will cause the color of the world’s oceans to change.

MIT researchers have found that climate change will cause half of the world’s oceans to change color by 2100, reports Becky Ferreira for Motherboard. “Monitoring ocean color could yield valuable insights into the effects of climate change on phytoplankton,” Ferreira explains.

The Washington Post spotlights an MIT study examining how climate change will alter the color of the oceans. “Changes are happening because of climate change,” says principal research scientist Stephanie Dutkiewicz. “The change in the color of the ocean will be one of early warning signals that we really have changed our planet.”