Was the epic 2011 heat wave in Texas due to global warming or natural variation?
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?
How do current conditions compare to past predictions of the effects of global warming? Are living on a warming planet?
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?