The Earth is really, really old. Over 4 1/2 billion years old, in fact. How do we begin to comprehend a number that large? It helps to put it on a more fathomable scale. Watch to see where Earth's ...

We learned last year that many of the effects of climate change are irreversible. Sea levels have been rising at a greater rate year after year, and the Intergovernmental Panel on Climate Change ...

Virtually anywhere on Earth, disaster is just a random collision ... Flow nabbed a Golden Globe for Best Animated Feature, beating out movies from Disney/Pixar, DreamWorks, and the Wallace and ...