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 ...

As National Geographic showed us in 2013, sea levels would rise by 216 feet if all the land ice on the planet were to melt. This would dramatically reshape the continents and drown many of the ...

said in a statement about the new animation showcasing Earth’s evolution. “But our geological models have only provided a fragmented understanding of how our planet’s recent physical ...