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.
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NPR's Steve Inskeep speaks with Philippe Lazzarini, the commissioner general of the U.N.'s lead agency for aid to Palestinians, about the international response to a humanitarian catastrophe in Gaza.