Why don't rivers straighten out over time?

Seen from above, the world's greatest rivers can be recognized by their serpentine curves. But how do these shapes form, do they alter over time and does this matter? We turned to our river system expert, Carmelo Juez.

Warming world creates hazard for Alpine glaciers

Italy was enduring a prolonged heat wave before a massive piece of Alpine glacier broke off and killed hikers on Sunday and experts say climate change will make those hot, destabilizing conditions more common.

From dry to deluge, how heavy snow, rain flooded Yellowstone

Just three months ago, the Yellowstone region like most of the West was dragging through an extended drought with little snow in the mountains and wildfire scars in Red Lodge from a year ago when the area was hit by 105-degree ...

Air pollution may increase freezing rain in northern hemisphere

Freezing rain is a typical weather disaster in winter and early spring over many regions of the world, even tropical areas. It develops as supercooled water (below 0 °C) in the air and freezes immediately after depositing ...

Seen from space, the snow-capped Alps are going green

The famous snow-capped peaks of the Alps are fading fast and being replaced by vegetation cover—a process called "greening" that is expected to accelerate climate change, a study said Thursday.

page 2 from 7