A 13-year-old boy stumbled upon the Lost Sea, North America's largest underground lake, in a Tennessee cavern. With underwater passages yet to be fully explored, this vast hidden world is home to ...
The Great Salt Lake is drying. In the past few years, its waters have shrunk to almost half, NPR said. The dwindling waters cause the wet sediment on the shore to dry up. And as it dries, it turns ...