A closely watched clinical trial in Britain that screened blood for early detection of cancer did not show a reduction in diagnoses at later stages of the disease. By Rebecca Robbins and Gina Kolata A ...

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 ...

Strategies professor Phillips Payson O’Brien tells the Atlantic that the U.S. military is showing signs of stupid. “When a complex system starts to decay, the first signs are usually subtle,” said ...