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.
President Biden speaks at an event put on by the U.S. Holocaust Memorial Museum about fighting antisemitism, an issue that pushed him to run in 2019 and which is taking on new significance.