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What a difference 100 years make!

Explore America's streams and rivers from your computer or mobile device.

California's hotter droughts are a preview of a warmer future world.

RESTON, Va. — A new public-private research collaboration supported by the U.S. Geological Survey will tackle how to best cope with the increasing...

The Tertiary is a system of rocks, above the Cretaceous and below the Quaternary, that defines the Tertiary Period of geologic time. T

The U.S. Geological Survey is playing a role in providing the science being used by agencies to manage the habitat for two threatened California fish...

Long-term declines in the overwintering Eastern population of North American monarch butterflies are significantly increasing their likelihood of...

Scientists have traced the history of lead and mercury contamination in tidal wetlands of the Sacramento-San Joaquin Delta, according to a new U.S...

The American oystercatchers studied on Cape Lookout National Seashore in North Carolina were disturbed more by pedestrians and off-road vehicles...