Nearly 40 years after the United States abadoned Jonas Salk's injectable polio vaccine in favor of the oral version created by his rival, Albert Sabin, the pendaulum has swung back. Starting in 2000,

Chemists at the University of California at Los Angeles are reporting another advance in the effort to produce electronic circuitry on a molecular scale. In an article published in the journal

The year 1997 marked the start of Brazil's policy of producing generic AIDS medicines and distributing them to patients, free of charge. For the government, it stood as a turning point in its

The week after global trade talks collapsed in Seattle, the Indian commerce minister rose in parliament in New Delhi to denounce what he called a pernicious attempt by the richest, most powerful

The Australian government has backed plans by the country's chief medical officer to refuse blood donations from people who lived in Britain within a certain time period and ate beef

European Union veterinary experts may recommend easing a ban on English pig exports next week if Britain can show it has contained an outbreak of swine fever, EU officials

Choking wildfire smoke in southwestern Montana prompted more evacuations as the governor prepared to declare the US state a disaster area. More than 2,000 blazes have burned 457,000 acres statewide

Scientists have spurred bone marrow cells to turn into nerve cells, raising the tantalizing possibility of an easily accessible source of replacement cells to treat brain and nerve injuries and

Amid unmistakable signs of a thaw in tensions on the Korean Peninsula, U.S. and South Korean executives signed a contract for construction of twin 1,000-megawatt nuclear reactors to fulfill North

At the urging of anti-biotechnology groups, five farmers in the United States and one in France, represented by 11 law firms, filed a class-action lawsuit in U.S. District Court in Washington against