Researchers from the U.S. Army and Thailand announced last month they had found the first vaccine that provided some protection against HIV. But a second analysis of the study suggests the results may have been a fluke, according to scientists.
An obscure California company run by an ex-convict with a history of fraud convictions is dropping its effort to take over a Montana jail — days after state officials launched an investigation and several key participants backed away from the p
A nuclear physicist working at the world's largest atom smasher has been arrested on suspicion of links to the Algerian branch of Al Qaeda, another blow to a project plagued by glitches, shut down after a massive electrical failure a year ago.
A homicide bomber blew up his vehicle near a crowded market in northwestern Pakistan on Friday, killing 49 people and pushing the country closer to an offensive against militants in their main stronghold along the Afghan border.