New research may have solved an American mystery which has baffled geologists for a century and a half: How did a river carve ...

With the demise of the wolverine (Gulo luscus Linnaeus) in the Adirondacks in the late 1700’s or early 1800’s, the river otter became the region’s largest member of the weasel family. Adults weigh 5.4 ...

The Colorado River — the “American Nile” — winds from its headwaters high in the Rocky Mountains and down through the canyons and mesas of southeastern Utah before it reaches the Glen Canyon Dam, ...

Original Caption: Firemen stand on a bridge over the Cuyahoga River to spray water on the tug Arizona, as a fire, started in an oil slick on the river, sweeps the docks at the Great Lakes Towing ...