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A team of USGS researchers in Flagstaff are working to develop an all new geologic map of the Grand Canyon region.

A light, 4.7-magnitude earthquake struck in Northern California on Wednesday, according to the United States Geological ...

The structure of the ocean floor is extremely vast and irregular. In 1948, when Marie Tharp started working at the Lamont ...

"This number is based simply on averaging the two intervals between the three major past eruptions at Yellowstone—this is ...

The tremor struck at 6:34 p.m. and was located 2.3 miles northwest of Cobb, a census designated place 41 miles north of Santa ...

A map from the U.S. Geological Survey shows that 222 possible non-native species had the potential to spread in Georgia and ...

President-elect Donald Trump suggested renaming the Gulf of Mexico after the U.S. But can he really do that? Here's how place ...

At least 95 people have died and "many buildings" have collapsed, following the quake in the magnitude 7 range, according to ...

In the mid-1800s, the U.S. Department of the Interior began the “great surveys” to map the vast, uncharted land of the West, ...

The giant supervolcano that lies under Yellowstone National Park is cooling off in the west but staying hot in the northeast.