Scientific American Magazine

New fossils and analyses topple the long-standing explanation of how dinosaurs came to rule the earth

Astronomers’ newfound ability to see the same cosmic events in light, particles and gravitational waves—a synthesis called multimessenger astronomy— gives them a fuller picture of some of the universe’s most mysterious phenomena

Resurgent outbreaks of infectious diseases are sickening thousands, and the causes are societal

The same preventive shot may be less effective in poor neighborhoods than in rich ones

An experimental approach may arm immune cells against many strains, eliminating annual guesswork

Climate change is accelerating the spread of disease—and making it much harder to predict outbreaks

A program to stop deadly diseases from spreading to the U.S. by helping foreign countries contain them now faces steep cuts

Low emotional security can intensify our relationships to our belongings

The race is on to exploit—and protect—the ocean floor