glaciers

Water scarcity and heat are threatening two of Switzerland's main agricultural products: milk and cheese. But the shortage affects far more than cows — Swiss glaciers also feed Europe's major rivers.

Xinjiang has nearly 20,000 glaciers, half of China's total. They're all receding at a record pace — and will continue to melt, some scientists warn, even if global temperatures stop rising.

Rock, once a seafloor of mud, sand, and pebbles, towers into the sky, only to erode away, becoming a new and different seafloor, layered like pages in a book.

Appalachian State University's Dr. Ellen Cowan reads these pages, most recently off the coast of Alaska. They tell the full story of geological changes on the continent, as written by glaciers over millions of years.

Bull trout are dwindling in Montana as their home waters warm and invasive fish devour them. Scooping up threatened fish and moving them higher up the mountain could backfire. Is the risk worth it?

The international report card is out and confirms the hottest average on record — for a third time in 15 years. More than 400 scientists contributed data, finding a spike in sea and air temperatures.

The rate at which the ice is shrinking at the ocean's edge in the West Antarctic has increased by 70 percent over the past decade, an analysis of satellite measurements suggests.