In this handout image supplied by the European Space Agency on July 16, 2008, the Echus Chasma, one of the largest water source regions on Mars, is pictured from ESA's Mars Express. ESA/Getty Images hide caption
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A new study finds that stimulating the brain during sleep can improve memory. DrAfter123/Getty Images hide caption
Scientists zap sleeping humans' brains with electricity to improve their memory
Head of the Brain-Computer Interface Programm at the French Atomic Energy and Alternative Energies Commission (CEA), Guillaume Charvet from France, shows implants that allows a paralyzed man to walk naturally, during a press conference in Lausanne on May 23, 2023. Fabrice Coffrini/AFP via Getty Images hide caption
Many medical students do not attend lectures in the first two years, instead opting to watch recorded classes on their own time. Tom Fowlks/Getty Images hide caption
Some of the fastest sea level rise in the world is happening in Galveston, Texas. Ryan Kellman/NPR hide caption
Good health depends on more than daily exercise and a healthy diet. Access to safe housing, good schools and a decent job are important too. Si-Gal/Getty Images hide caption
Community activist Margaret Gordon sits on a bench in West Oakland with the BART tracks behind her on March 4, 2022, as a semi-truck stops on 7th Street, on a popular trucking route to the nearby Port of Oakland. Beth LaBerge/KQED hide caption
Advocates: Reparations are the answer for sea level threat in West Oakland, Calif.
Scientists are studying police camera footage to understand why some car stops of Black men escalate and others don't. Hill Street Studios/Getty Images hide caption
Mora Leeb places some pieces into a puzzle during a local puzzle tournament. The 15-year-old has grown up without the left side of her brain after it was removed when she was an infant. Seth Leeb/Seth Leeb hide caption
A worker at the Wupperthal Original Rooibos Co-operative's processing facility carries a bag of freshly harvested rooibos to the processing area. The country's rooibos tea exports have skyrocketed from barely 500 tons in 1996 to nearly 9,000 tons today — enough to fill 3.6 billion teabags. But Indigenous farmers were long cut out of the revenues, until a ground-breaking agreement was forged. Tommy Trenchard for NPR hide caption
The brain requires a large number of nutrients for optimal health and efficiency, but micronutrients are typically absorbed better through foods than through supplements. Grace Cary/Getty Images hide caption
Study participants in The Gambia received a measles vaccine through a virtually pain-free sticker. Early data on adults and children as young as nine months suggest the syringe-free skin patch is safe and effective. Micron Biomedical hide caption
The seven galaxies noted in this James Webb Space Telescope image are at a distance that astronomers refer to as redshift 7.9, which correlates to 650 million years after the big bang. NASA, ESA, CSA, T. Morishita (IPAC). Image processing: A. Pagan (STScI) hide caption
Leila Mirhaydari, shown shortly after her kidney transplant surgery in 2014. Eight years later, Leila learned her body was rejecting the donated organ. Courtesy of Leila Mirhaydari hide caption
The CPSC commissioned new stock photos showing Americans with disabilities using a variety of home safety devices, including portable generators. U.S. Consumer Product Safety Commission hide caption
"When you're younger, your mind is more open, and you're more creative," says 13-year-old Leo De Leon. Adolescence is a time of rapid brain development that scientists call "breathtaking." Jon Hamilton/NPR hide caption
A screenshot shows TikTok user yafavv.mandaa finding a blue couch on a New York City street. The video spurred questions about whether the sofa might have bed bugs. Screenshot by NPR hide caption
Astronaut Peggy Whitson, probably thinking about breaking records or being in space. Bill Ingalls/NASA/NASA via Getty Images hide caption
A lodgepole chipmunk (Tamias speciosus) on a rock. Ketki Samel hide caption
Climate change stresses out these chipmunks. Why are their cousins so chill?
A SpaceX Falcon 9 rocket, with the Dragon capsule and a crew of four private astronauts lifts off from pad 39A, at the Kennedy Space Center in Cape Canaveral, Fla., on Sunday. John Raoux/AP hide caption