Brian Wallach and Sandra Abrevaya at their home in suburban Chicago. Jamie Kelter Davis for NPR hide caption
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Friday
This artist's concept shows stars, black holes, and nebula laid over a grid representing the fabric of space-time. Ripples in this fabric are called gravitational waves. Astronomers have found evidence of gravitational waves created by black holes billions of times the mass of the Sun. NANOGrav collaboration; Aurore Simonet hide caption
Thursday
The IceCube Lab under a starry, night sky, with the Milky Way appearing over low auroras in the background. Yuya Makino, IceCube/NSF hide caption
Wednesday
This artist's impression shows a pair of supermassive black holes circling each other and sending out gravitational waves, which affect the bright, shining pulsars. NANOGrav/Sonoma State University/Aurore Simonnet hide caption
Scientists have found signs of a new kind of gravitational wave. It's really big
Back and neck pain affect millions of Americans. New research suggests that opioids may not make sense for treating certain kinds of acute back pain. South_agency/Getty Images hide caption
A garden center sign on Congress Avenue on Tuesday in Austin, Texas Suzanne Cordeiro/AFP via Getty Images hide caption
This kelp forest in the Galapagos is made up of an unknown kelp species and grows at a depth of 50 to 60 meters. Salomé Buglass hide caption
Why finding kelp in the Galapagos is like finding a polar bear in the Bahamas
Tuesday
March 1944: A cloud of ash hangs over Vesuvius during its worst eruption in more than 70 years. In the foreground is the city of Naples. The nearby towns of Massa and San Sebastiano were destroyed by the flow of lava. (Photo by Keystone/Getty Images) Keystone/Getty Images hide caption
Monday
New research finds that people who try time-restricted eating have success losing weight comparable to those who count calories. Elizabeth Fernandez/Getty Images hide caption
Standard sunscreen options for purchase. Scott Olson/Getty Images hide caption
In patients with Alzheimer's disease, a substance called beta-amyloid can form toxic clumps in between neurons. Drugs like lecanemab are designed to remove amyloid-beta from the brain. National Institute on Aging, National Institutes of Health. hide caption
An Alzheimer's drug is on the way, but getting it may still be tough. Here's why
Why do some people get rashes in space? There's a clue in astronaut blood
When Kristie Fields was undergoing treatment for breast cancer nine years ago, a nurse suggested she go on the local news and ask for help with her medical bills. Fields says she and her husband quickly dismissed the idea. Sonja Foster/KFF Health News hide caption
'We're not doing that': A Black couple won't crowdfund to pay medical debt
Saturday
An amateur astronomer points in the direction of a celestial object under exceptionally dark skies at Cherry Springs State Park in northern Pennsylvania earlier this month. Wassana Laisukang hide caption
Friday
The interior of the Savannah remains a time capsule of the mid-century era in which it operated. The main lobby of the cruise ship welcomed paying passengers from 1962 to 1965. Meredith Rizzo for NPR hide caption