Western US

Prescribed burning in Arizona

California must learn to fight fire with prescribed fire, experts say


A century of fire suppression has turned much of the West into a tinderbox. Prescribed fire could help bring nature back into balance, but it’s currently far more common in the Southeastern US than in the West, where it’s sorely needed.

White Mountains — Pines

Tree species are leap-frogging up mountains in reaction to climate change

Glen Canyon Dam

Is it time to think about removing dams on the Colorado River?

The World

Fire Season

Taming the Colorado River: Hoover Dam turns 75