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One of the primary tools that U.S. transportation departments count on to keep roads safe is road salt. But that has meant rising levels of chloride in many northern streams.

In Northeastern Colorado, farmers growing food like corn and potatoes depend for water on a giant, underground reservoir. Called the Ogallala, or High…

Peaks around Glacier National Park store water that irrigates a large section of North America. But a warming climate is shrinking that snowpack, with ominous consequences for wildlife and people.

Powerful chemicals used by many farmers to ward off insects are making their way into Midwest rivers and streams, according to a study by the U.S.…

After a 3.2 magnitude earthquake hit Saturday evening near the northeastern Colorado town of Greeley, questions about its connection to oil and gas…

The area where the Collbran mudslide happened has seen similar slides in the past. Geologists say relatively weak rock and steep terrain create a recipe...

Warmer weather is coming, and that means thunderstorms. A new Google Map from the U.S. Geological Survey visualizes county-by-county data on lightning…

In addition to shutdowns of national parks (including Alcatraz and Yosemite) and the supplemental nutrition program for women, infants and children, the mandatory furloughs are affecting a wide range of government science and health agencies.

A new scientific report claims that a powerful quake can, in effect, be contagious. The finding could have important implications for hazard planning in earthquake zones.

Farmers are mining the sea for salt on the same shore where the salt industry boomed 170 years ago. Fans of local food are buying up the favorite condiment collected close to home.