General Motors Corp. said it had developed a prototype sedan powered by fuel cells four times as efficient as its current gasoline engines. The fuel cells consume hydrogen and get the equivalent of

Mexico City had its cleanest year of the decade in 1999, the government announced in newspaper advertisements. According to the city government, smog levels forced the declaration of an emergency

The US government's seizures of imported drugs soared last year to thousands of parcels containing more than a million pills as consumers turned to on-line drugstores based overseas to seek bargains

For the first time, the UN Security Council has taken up a health issue-the spread of AIDS, especially in sub-Saharan Africa, where the United Nations calls it "the worst infectious disease

A growing disaster : Burma has become an epicenter for the spread of AIDS in Asia. Yet both the Burmese military government and the opposition, intent on their own political agendas, ignore the

The U.S. Food and Drug Administration has at long last approved domestic use of the abortion drug mifepristone-better known as RU-486. The approval was 12 years in coming.

Scientists in the burgeoning field of artifical lief have reached a major milestone, creating a computerized system that automatically creates,evolves,improves and finally builds a variety of simple

A US judge has ruled that Texas's system for administering preventive medicine and certain other health care for children in Medicaid programs is badly flawed, and he has ordered the state to make

Scientists at Johns Hopkins University in Baltimore have produced a substance that rapidly shuts down appetite in mice, leading to a loss of as much as 30 percent in total body weight within a week

Bayer AG, a German drugmaker, said that it planned to introduce an anti-impotence pill for men in two years that could take on Pfizer's lucrative Viagra