A series of rocks hiding around Colorado's Rocky Mountains may hold clues to a frigid period in Earth's past when glaciers several miles thick covered the entire planet.

Tomorrow's the festival, followed by the royal banquet, and that's all before the actual coronation on Sunday. Oh, come on, really? Look, Rapunzel, I know this princess thing is new to you, but you've ...

Pando is the world's largest tree. Its name means "I spread" in Latin, and it does indeed spread: The organism has given rise ...