The brain makes a lot of waste. Now scientists think they know where it goes The brain appears to rely on synchronized waves to wash out waste products, including toxins associated with Alzheimer's disease. Jon Hamilton
China has just returned the first-ever samples from the far side of the moon The far side of the moon looks very different from the near side, and with the Chang'e 6 mission, scientists are hoping to learn why. Geoff Brumfiel
Scientists look at the connection between gut health and resilience to stress Scientists are trying to decode how the trillions of microorganisms in our gut talk with the brain and shape our resilience to stress. A new study offers some initial clues. Will Stone
Boeing Starliner's return from International Space Station delayed again Two astronauts arrived at the International Space Station aboard the Starliner earlier this month. They were supposed to stay for about a week. Now, they will be up there for about a month.
Paris wants an AC-free Olympic Village. Team USA and others aren't so chill with it The U.S. is among the countries bringing portable AC units to the Paris Olympics this summer since the Athletes' Village won't have any. Many athletes are worried about competing in extreme heat. Rachel Treisman
A Florida family is suing NASA after a piece of space debris crashed through their home Joe Hernandez
Asteroid headed toward Earth? NASA simulation explores how the nation might respond Nell Greenfieldboyce
Lots of rumbling under Mount St. Helens, but scientists say no cause for alarm Scientists have registered nearly 350 small-magnitude earthquakes beneath Mount St. Helens in the last five months, but they say there's no cause for concern. Kate Walters