Flooding

Researchers have figured out a new way to predict which rivers are most at risk of dangerous flooding.

A satellite image of Namibia shows spring flooding on the Zambezi River. The flood waters appear black against the bright green of the vegetation.

The mysterious abandonment of Cahokia, one of North America's greatest cities, may be linked to a massive Mississippi River flood 1,800 years ago.

FEMA's new NYC flood maps are already outdated.

The U.K. Royal Air Force is joining flood recovery efforts in the U.K. after winter storms have drenched the area and caused the River Thames to overtop its banks.

In the aftermath of September flash floods in Colorado, landslides mar the Rocky Mountains all the way down to the foothills. Geologists warn that rockfalls will be more common for years.