An April 2026 CDC report found a rising share of extensively drug-resistant Shigella in historical U.S. samples. Here is what the numbers mean, why “untreatable” is misleading and how the infection spreads.
Two lightning strikes disrupted Apollo 12 less than a minute after launch. A remembered test, a rarely used switch and careful checks helped the crew continue its 1969 Moon mission.
A new genetic study examines how the world’s oldest known living land animal has endured. The findings offer research leads, with important limits on what they can tell us about human aging.