At the start of the last ice age, 2.6 million years ago, a sheet of frozen water formed atop North America that kept expanding and thickening until it reached a maximum depth of roughly 2 miles.

New York is a state brimming with outdoor adventures and thrills, like this road trip that provides views of the state's ...

Across Europe and around the world, melting glaciers are reshaping landscapes and climate systems. Researchers Elzė ...