A new development in the mystery of a purported city beneath Egypt's Giza pyramids could, if proven true, fundamentally ...
The split between South America and Africa 135 million years ago was a fiery affair, new research finds. The continental breakup spewed over 3.8 million cubic miles (16 million cubic kilometers) of ...
Beneath the crust of North America, scientists have found that the deep roots of the continent are slowly dripping away in blobs of rock.