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In a July 26, 1989, letter to Admiral James D. Watkins, President George Bush declared: 'We cannot and will not wait for the next energy crisis.' Bush instructed his energy [...]

Dreissena polymorpha must seem downright unneighborly to the residents of Monroe, Mich. In December 1989, for instance, thousands of these little mollusks, commonly known as zebra mussels, clogged the sole [...]

Picture a bird searching for a mid-afternoon snack -- perhaps a butterfly. After all, butterflies fluttering from flower to flower make easy targets for a swooping bird. Suddenly, the bird [...]

Three years after the discovery that regular aspirin use can help prevent heart attacks - and barely a year after reports that it can lower the risk of strokes - [...]

Most birth defects don't rise with age Many women who postpone childbearing until their late 30s wonder whether their age increases the odds of having a child with a birth [...]

Almost one-third of all AIDS patients eventually develop encephalitis, or inflammation of the brain. As their encephalitis progresses, memory loss and other forms of dementia become increasingly severe. This has [...]

Because the Food and Drug Administration relies on outdated technology to test food for dangerous pesticide residues, its routine screening assays can detect only 40 percent of all U.S. pesticides [...]

Despite uncertainties in the science of predicting global climate change, the National Academy of Sciences (NAS) urges immediate action to curb greenhouse-gas emissions by reducing fossil-fuel consumption, promoting energy conservation, [...]

Prostate screen: Blood test rates best Men with prostate cancer face some grim statistics. About 30,000 die from this disease in the United States each year, in part because 70 [...]

Bat breath adds fuel to evolutionary flap Flying consumes a lot of an animal's energy. Sending out ultrasonic pulses and analyzing their echoes can also burn up plenty of fuel. [...]

New evidence supports genomic imprinting In a mid-19th-century monastery garden, Gregor Mendel's experiments with smooth and wrinkled peas revealed the rules by which parents pass on traits to their offspring. [...]

Fresh smoke lowers nitrous oxide estimate Biomass burning -- the combustion of organic matter in forest fires, wood stoves and 'slash and burn' land clearing -- may contribute far less [...]