Thunder Bay, an area of northern Lake Huron known for extreme weather and dangerous shoals, has claimed hundreds of ships over the last century. These sunken ships reveal archeological clues about the Great Lakes' commercial shipping past and the water's present health. Scuba diving archaeologists ...
Iceland may be the last exposed remnant of a nearly Texas-size continent — called Icelandia — that sank beneath the North Atlantic Ocean about 10 million years ago.