Heavily armed militants were holding up to 15 soldiers hostage inside Pakistan's army headquarters after they stormed the complex in an assault on the heart of the nuclear-armed country's most powerful institution.
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.