Shortly before noon on March 31, 1995, fan club manager Yolanda Saldívar fatally shot the 23-year-old singer at a Days Inn hotel in Corpus Christi, Texas. Witnesses watched in horror as Selena made ...

Oxygen uncovers disturbing new insights into one of America’s most shocking killing sprees with its new documentary Charmed by the Devil. The film follows journalist Laura Greenberg’s 40-year quest to ...

Microscopic ocean algae produce a huge share of Earth’s oxygen—but they need iron to do it. New field research shows that when iron is scarce, phytoplankton waste energy and photosynthesis falters.