Joe Palca is a science correspondent for NPR. Since joining NPR in 1992, Palca has covered a range of science topics — everything from biomedical research to astronomy. He is currently focused on the eponymous series, "Joe's Big Idea." Stories in the series explore the minds and motivations of scientists and inventors. Palca is also the founder of NPR Scicommers – A science communication collective.
Record and email us a voice memo telling us about a song that reminds you of Mom. We'll share select stories and songs on an upcoming episode of All Songs Considered.
Hersh Goldberg-Polin, who turned 24 last month while in captivity, has spent more than 200 days in captivity. His left arm was partially blown off by a grenade during the Hamas-led attack on Oct. 7.