The origins of plate tectonics on Earth are hotly debated, but evidence from Australia now shows that parts of the crust ...

Is Arizona's most beautiful place an iconic red rock butte, a blue-green waterfall or an otherworldly cave formation? Vote in our stunning views poll.

This gorgeous trail in North Carolina is part of the "Grand Canyon of the East" and features unique rock formations and a ...

Learn about how volcanoes are formed and the ways they erupt Chiara Maria Petrone, Roberto Scandone, and Alex Whittaker On ...