By 3.6 billion years ago, Mars should have become too cold for liquid water, but something kept the rivers flowing.
The new study suggests that the planet experienced a swift and intense melting phase following the last global ice age. At ...
ESA COP16 delegates at the base of the stairs after completing the hike to Las Tres Cruces. From left to right: unknown hiker, Zohra Zahir, Jeannine Cavender-Bares, and David Baldwin. Taken on October ...
Cratons are fascinating yet enigmatic geological formations. Known to be relatively stable portions of the Earth's ...