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Date published: January 2, 2001

Concentrations of Nitrous Oxide in the Central High Plains Aquifer Are Increasing

Nitrous oxide is an important atmospheric trace gas that contributes to the greenhouse effect and the destruction of ozone. Researchers hypothesize that one important source of atmospheric nitrous oxide is ground water, yet few studies have tested this hypothesis.

Date published: December 21, 2000

California Ravens Are a Breed Apart

The common raven in California is not so common after all, according to a team of scientists at the U.S. Geological Survey and other research institutions involved in new genetics research.

Date published: December 19, 2000

USGS Model Forecasts Effects Of Selenium

The effects of selenium entering the San Francisco Bay-Delta Estuary (Bay-Delta) are forecast in a model released today by the U.S. Geological Survey (USGS).

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Date published: December 18, 2000

Christmasberry - Bah Humbug And a Seasonal "DON'T" This Time of Year

Originating along riverbanks in Brazil a plant called Christmasberry, or Brazilian peppertree, is used to deck halls and homes in this holiday time of year. Earlier this month, Christmasberry was even offered for sale at a "swap-meet" in Kahului, Maui, Hawaii, where it was labeled "Maui mistletoe."

Date published: December 7, 2000

A Bird of A Different Feather: DNA Research Reveals New Bird Species in Colorado

Neither a tree-dweller nor a night bird, and roughly the size of a chicken, the Gunnison sage-grouse is not a particularly secretive bird yet just recently has it been identified as a new species of bird. 

Date published: December 7, 2000

Earthquake Shakes Evansville Area

A minor earthquake, preliminary magnitude 3.9 according to the U.S. Geological Survey, occurred about 5 miles west of Evansville, Indiana at 8:08 am local time (Central Standard Time). The earthquake was felt in parts of southern Indiana and western Kentucky. The USGS has received no reports of damage at this time.

Date published: December 7, 2000

USGS Research Finds that Contaminants May Play an Important Role in California Amphibian Declines

Scientists have confirmed that agricultural contaminants may be an important factor in amphibian declines in California.

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