Huge tunnels under southern Brazil and northern Argentina were potentially made by giant, Ice Age sloths for refuge and rest ...

The findings, published in the academic journal Science on Friday, reshape human understanding of how water is stored and ...

Sinkholes are not just costly inconveniences, they are growing threat to commercial activities, livelihood and property and are increasing in frequency due to climate change.

Where Volcanoes Are Born Most volcanoes form at the boundaries of Earth's tectonic plates, which are huge slabs of crust and ...