If Earth's history were a calendar year, humans would not appear until the last few minutes before midnight on Dec. 31.

Follow the heartfelt process of crafting marble and granite from rugged mountain rocks. This video reveals each step, showing ...

Petrified wood forms through a process known as permineralization, which happens under very specific conditions. It all starts with the burial of organic plant material—trees and other types of ...

Breathtaking beauty, copper mines and the tale of a heroic dog have attracted visitors to this picturesque spot for many ...