Officially, only one person has caught bird flu during the current outbreak among dairy cattle, but experts are hearing of others getting sick. The U.S. doesn't have an easy to way to detect cases.
It's taken months of debate on the Hill, but Ukraine finally has the military assistance it's been seeking. After two years of fighting, military experts say the nation still faces a long road ahead.
President Biden broke his silence on student protests that have roiled college campuses, denouncing "chaos" and antisemitism and saying the protests were not affecting his policy on the Middle East.
NPR's Juana Summers talks with Regina Barber and Emily Kwong of Short Wave about biodegradable plastic, simulating growing crops on Mars, and how deer are disrupting caribou populations.