Particles of both minerals and organic matter track the retreat of the Cordilleran Ice Sheet, which melted about 20,000 years ...

Woolly mammoths may have had the size—but did they have the skills? Join us as we rank the fiercest and strangest creatures from Earth’s frozen past.

At a site known as Natural Trap Cave, a team of scientists are rappelling down to uncover the secrets of what the Earth was ...