Former NASA officials warn that the U.S. looks poised to lose its self-declared race to beat China to the moon ...

To celebrate Scientific American ’s 180th anniversary, we’re publishing jigsaw puzzles to show off some of our most ...

Melissa is a relatively slow-moving Category 4 major hurricane—a brutal combination that will drench some parts of Jamaica with up to 40 inches of rain ...

Its outstanding characteristic is that its waves, unlike the waves from ordinary light sources, are coordinated in space and ...