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 ...

Scotese studies how plate tectonics and a warming climate will change Earth's appearance in the future, and he has made multiple animated maps based from his research. For more animations from ...

Using information from inside the rocks on Earth's surface ... which you can see in the animation below. The work, led by ...