A new study in Chile shows how small differences in rock type can drive large differences in erosion, vegetation, and river networks, illuminating the role of mineralogy in shaping landscapes.

The Umatilla River once served as an important meeting ground for the Cayuse and their Nez Perce allies to the east.

Alaska National Parks are a must-see for any National Park fan! There is just something about Alaska and the wild beauty ...

An eruption of Mount Churchill today similar to previous major plumes would bring much of the Northern Hemisphere to a ...

All that changed Thursday, as Deeter took home the top prize in the Yukon Quest Alaska 550. He crossed the finish line in Tok at 2:49 p.m. Thursday, finishing the race in 5 days, 3 hours and 49 ...

Mount Churchill stands in a white corner of the Alaska map, deceptive in its cold, windblown silence. At least twice in the last few thousand years, the peak’s ice-covered caldera has spewed ash that ...