Unified Interior Regions

While it is known that pre-Columbian peoples of North America used fire as a tool to manage natural resources, scientists have long debated the impact of this usage of fire on the landscape.

Above the water it’s a rugged shoreline and a few jagged rocks adorned with bird droppings. Below the surface, however, the Gulf of the Farallones, west of the Golden Gate Bridge, encompasses an area of 4,000 square miles of sea floor, marine life and mysterious objects that may be affecting the area’s environment.

Above the water it’s a rugged shoreline and a few jagged rocks adorned with bird droppings. Below the surface, however, the Gulf of the Farallones, west of the Golden Gate Bridge, encompasses an area of 4,000 square miles of sea floor, marine life and mysterious objects that may be affecting the area’s environment.

The United States and the People’s Republic of China share a common problem ? elevated nitrate concentrations in water supplies used for drinking water, according to a recently released report by the U.S. Geological Survey (USGS). While elevated concentrations of nitrate in water have been known to cause illness in babies, there is also indirect evidence that they can cause cancer. 

University of Utah seismologists will be on duty around-the-clock during the Olympics, armed with a new $1.2 million system so they can quickly supply public safety information if any disruptive earthquakes shake the 2002 Winter Games.

There is science and there is spirit. Sometimes the two twine at apt times. So it is that, in the spirit of an ancient, but ageless Santa Claus, the General Grant Tree-- officially designated in 1926 as the Nation’s Christmas tree by President Calvin Coolidge -- just keeps getting younger.

Stress changes produced by the 1906 San Francisco earthquake had a profound effect on Bay Area seismicity by dramatically reducing it in the 20th century, according to David Schwartz, of the U.S. Geological Survey in Menlo Park, Calif.

Stress changes produced by the 1906 San Francisco earthquake had a profound effect on Bay Area seismicity by dramatically reducing it in the 20th century, according to David Schwartz, of the U.S. Geological Survey in Menlo Park, Calif. 

Nearly 300 scientists from the U.S. Geological Survey will present papers and posters describing their earth-science research, during the annual meeting of the American Geophysical Union (AGU), at the Moscone Convention Center in San Francisco, December 10 – 14. 

There is science and there is spirit. Sometimes the two twine at apt times. So it is that, in the spirit of an ancient, but ageless Santa Claus, the General Grant Tree-- officially designated in 1926 as the Nation’s Christmas tree by President Calvin Coolidge -- just keeps getting younger.

Of Alaska’s several-thousand valley glaciers, including nearly 700 that are named, fewer than 20 are advancing, according to a major study that U.S. Geological Survey (USGS) scientist Bruce F. Molnia will present at the American Geophysical Union Annual 2001 Fall Meeting, scheduled for Dec. 10-14 in San Francisco, CA.