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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.
Tamara Keith has been a White House correspondent for NPR since 2014 and co-hosts the NPR Politics Podcast, the top political news podcast in America. Keith has chronicled the Trump administration from day one, putting this unorthodox presidency in context for NPR listeners, from early morning tweets to executive orders and investigations. She covered the final two years of the Obama presidency, and during the 2016 presidential campaign she was assigned to cover Hillary Clinton. In 2018, Keith was elected to serve on the board of the White House Correspondents' Association.