10 Geological Forms We've Studied For Years And Still Don't Understand

Geology is full of strange mysteries, from towering structures to small formations. The more we examine these deceptively complicated phenomena, the less we understand their origins and the processes that created them. Here are 10 geological forms that we still don't understand, even after years of careful study. » 4/07/15 10:20am 4/07/15 10:20am

Witness a glacier's staggering seven-year retreat

Since 2004, glaciologist William Pfeffer has been photographing Alaska's Columbia Glacier. By monitoring where the glacier ends and the waters of Prince William Sound begin, Pfeffer is working to understand how coastal ice sheets contribute to rising ocean levels. Now, by piecing his photographs together, Pfeffer… » 4/27/12 11:45am 4/27/12 11:45am