NEW YORK—Emma Navarro isn’t known for expressing outsized emotions on the tennis court, which made the tense words she exchanged with Zheng Qinwen at the Summer Olympic Games all the more memorable.

Forecasters expect the El Niño now underway in the tropical Pacific to strengthen into a strong or very strong climate driver ...

A major overhaul of the Model Context Protocol due next month removes several longstanding protocol-level security risks but ...

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 ...