America’s National Parks offer some of the most stunning landscapes in the world, from the giant redwoods to the deep canyons ...

The Cambrian-age Tonto Group is a set of rocks famous for holding clues to the burst of new life that reshaped Earth 500 ...

NASA’s MAVEN spacecraft has observed atmospheric sputtering on Mars for the first time, confirming how solar wind stripped the Red Planet’s thick atmosphere and transformed its climate.

A mysterious spider fossil uncovered in Australia is turning heads with its unexpected size and age. Hidden beneath layers of ...