June 29, 2026 Scientists are raising concerns that we may be overlooking evidence of extraterrestrial life even when it is present. Hidden biosignatures, limitations in detection technology, and ...

National security, unlocked. Each Thursday, host Mary Louise Kelly and a team of NPR correspondents discuss the biggest national security news of the week. With decades of reporting from battlefields ...

August 28, 2025 • NPR was a pioneer and still has several shows in the top 10, but the podcast ecosystem is changing quickly.