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.
San Antonio's immigrant resource center aids hundreds of thousands of asylum-seekers with food, shelter and legal help. Without immigration reform, officials worry the challenges will continue.
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.