In the past decade, alongside steady growth in environmental anxiety and accumulating evidence of the risks of climate change, the area classified under the six categories of protected area

The tobacco industry may be forever changed by a jury's stunning award of $145 billion in punitive damages in a class action lawsuit brought on behalf of injured smokers in Florida. The process of

The U.S. House of Representatives voted to increase funding for poor countries' fight against AIDS and for international debt relief, in an unexpected reversal of the Republican leadership's effort

Former President Nelson Mandela of South Africa called for urgent action on HIV and AIDS as he closed the 13th International AIDS Conference in Durban, South Africa describing the worldwide epidemic

In unusually blunt language, Pentagon officials acknowledged the failure of their ambitious policy to inoculate all military personnel against the deadly anthrax virus. At a hearing of the Senate

Among the ravages AIDS has brought to Africa is a wave of orphanhood that will continue to grow for at least a generation, according to a U.S. government study that was released. Ten years from now,

The vast majority of cancers are not caused by inherited defects in people's genes, as many have come to believe in this age of genetics, but by environmental and behavioural factors like chemical

Surgeons in Taiwan and the United States have restored vision to people with previously untreatable eye damage by transplanting tissue grown in a laboratory. In a pair of new studies, researchers

An experimental vaccine for Alzheimer's disease reverses some damaging effects of the devastating brain disorder in animals and appears safe in the first tests on humans, according to a report by

Results of three small experiments in Africa have raised hopes that state-of-the-art treatments now available only in the world's richest countries might prove usable for larger, poorer AIDS-infected