div[class^=”single__body”]{margin:0px;} article iframe{border:none;min-width: 100vw !important;position: static;margin: 0 !important} p[class^=”article-footer__feedback”]{display:none;} figure, .share-print {display:none;} Sid Sivakumar, a puzzle constructor and M.D./Ph.D. student in biomedical engineering, edited this puzzle. Looking for answers? Go to sciencenews.org/puzzle-answers. We’d
Vampire bats are a Halloween staple, and now they’ve got company. Another bat species snatches birds out of the air for a gruesome midnight feast. Songbird DNA has previously shown up in the
Africa needs energy. Nearly 600 million Africans—half the continent’s population—are without electricity, largely because of the continent’s limited distribution network, and Africans make up the vast majority of those worldwide without electricity access.
If you’ve ever had a slobbery ball at your feet and a dog’s hopeful eyes asking for yet another throw, then you know that some dogs really love to play. Now, scientists back
Covid-19 vaccines are about to become widely available again across the United States, following several weeks of confusion around who would be able to get them this fall. Uncertainty over federal vaccine policy
Citations J.J. Mathews et al. Understanding dietary protein quality: Digestible indispensable amino acid scores and beyond, The Journal of Nutrition, posted July 15, 2025, doi: 10.1016/j.tjnut.2025.07.005 S.M. Forester, E.M. Reyes and D.K. Layman.
When Fred Ramsdell, 64, was named a Nobel Prize winner earlier this week, he was deep in the Wyoming mountains, blissfully offline and surrounded by fresh snow. The next day, as he was
Meghan Rosen is a senior writer who reports on the life sciences for Science News. She earned a Ph.D. in biochemistry and molecular biology with an emphasis in biotechnology from the University of
When asked to generate resumes for people with female names, such as Allison Baker or Maria Garcia, and people with male names, such as Matthew Owens or Joe Alvarez, ChatGPT made female candidates
When I sat down to write this story, I remembered the gummy worms in the snack drawer of my kitchen. So I got up and grabbed a handful. I should add that I
