Wildfire goes wild in Arizona

Wildfire goes wild in Arizona
As wildfires torch Western states, what is the role of global warming? Does hotter weather contribute to fires? Does the resulting carbon dioxide accelerate global warming? Could we see a vicious cycle of warming, fires and more warming? More »

State of the rivers: Ruinous?

State of the rivers: Ruinous?

Rivers bring water. They house amazing biodiversity. And they are being polluted, tapped, dammed and diverted at a frightening rate. What does a new study of global rivers tell us about something we can’t afford to lose?
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Globe Heating Up

How do current conditions compare to past predictions of the effects of global warming? Are living on a warming planet? More »

Water Woes

Water shortages loom as world population and economy soar. American Southwest, Egypt, Iraq, China. People are getting thirsty pretty much around the world. How does this matter? More »