Finding a sunken ship in the vast Lake Superior, 800 feet down, is not easy. Identifying it can be even harder. By Victor Mather He wanted to save the dog. A century ago, on Oct. 11, 1923 ...

A recent study reveals that this region was once home to a vast lake and river system. These favorable conditions fostered grasslands and savannahs, enabling human migration -- until drought ...

Utah’s Great Salt Lake is a relic of a once-vast lake that occupied the same site during the Ice Age. The lake’s level has fluctuated since measurements of it began in 1847, but it’s about ...