You are using an older browser version. Please use a supported version for the best MSN experience.

Emerging megadrought in Western US may become worst in recorded history

Looking at nine states, 1,200 years of tree-ring data, and weather and climate models, researchers found a megadrought in progress in the U.S. could become the worst since 800 AD because of climate change.

Latest Science & Tech Video

image beaconimage beaconimage beacon