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Astronomers weigh in on how to keep the planet safe from near-Earth objects.
Asteroid 2012 DA14 spans half a football field, and will whiz by the Earth a mere 17,000 miles above us--closer than many satellites.
A company aims to expand the world’s natural resource base by mining asteroids.
This year’s ‘Move an Asteroid’ competition winner shares her idea.
The comet ISON, discovered by two amateur astronomers last year, will zoom past the Earth next fall. But where did it come from?
Doctor Jordan Metzl says specific cardio and strength training regimens can trea...
Exercise scientists Tamara Hew-Butler and Greg Whyte talk about how the body cha...
Can regular mental exercise help slow down the progress of dementia?
Can exercise help keep aging brains healthy?
New York Times science writer William Broad’s book investigates popular health c...
Could popping a pill turn a couch potato into a long-distance runner?