![](http://static.ddmcdn.com/gif/blogs/dnews-files-2013-05-Rocky-Mountains-SMALL.jpg)
Melted snow from the Rocky Mountains supplies drinking water
for about 70 million Americans, but a study by the U.S. Geological
Survey warns that warmer springs reduced snow cover in the mountains by
20 percent since 1980.
![](http://static.ddmcdn.com/gif/minnesota-lake-superior-250.jpg)
A systematic sampling of lakes around Minnesota turned up a
wide variety of chemicals, including DEET, BPA, prescription drugs and
cocaine.
![](http://static.ddmcdn.com/gif/gardner1hr-250.jpg)
Goodbye, glaciers. These rivers of ice are melting worldwide.
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