The permafrost in the Arctic is leaking acid as it thaws, scientists have discovered. This release, from the water that has been locked up for thousands of years, is causing rocks in the ground to ...

As temperatures rise in the Arctic, permafrost — permanently frozen ground — is defrosting at an alarming rate. But the permafrost isn't the only thing in the Arctic that's melting. Exposed rock that ...

At the northern edge of Chile’s Atacama Desert sits a pile of rocks that’s so big that you can see it from space—and it’s ...