The supercontinent Nuna – also known as Colombia – formed when two chunks of Earth's crust smashed into each other around 1.8 billion years ago.

Learn more about the time period that took place 488 to 443 million years ago. 3 min read During the Ordovician period, part of the Paleozoic era, a rich variety of marine life flourished in the ...

That idea five years ago has come together for “The Americas,” a 10-part event series narrated by Tom Hanks highlighting the world’s great supercontinent.