Well before the Europeans arrived, the indigenous people of North America raised cities that rivaled those an ocean away.

For millions of years, the land we now call the United States has been home to towering prehistoric beasts, strange sea creatures, and lush ancient forests that no longer exist. Evidence of this ...

Atmospheric dust plays an important role in the way Earth absorbs and reflects sunlight, impacting the global climate, cloud ...

Cole & Jay find a flooded spillway packed with aggressive prehistoric fish. Australia to enforce social media age limit of 16 ...