A rock on Mars spilled a surprising yellow treasure after Curiosity accidentally cracked through its unremarkable exterior.

In this video, we visit a massive cave that holds the deepest pit in America. As we stand at the edge, we drop a rock down to ...

Spring break is here. These are some of the most popular travel destinations, including northern Arizona, San Diego, ...

This cave on a hillside near Tarbox Pond may have been a winter shelter for the Narragansetts. Find out why it's also known as "Witch's Cave." ...

Kartchner Caverns State Park is known for its diversity of minerals. On March 1, park staff spotted one that's particularly ...