The wife of the dead Boston Marathon bombing suspect is assisting authorities and she is in absolute shock that her husband and brother-in-law were accused of the deadly blasts, her lawyer said on Tuesday. The 19-year-old brother-in-law Dzhokhar Tsarnaev, who survived shootouts with police and has been criminally charged, was upgraded to "fair" from "serious"

Machines with the ability to attack targets without any human intervention must be banned before they are developed for use on the battlefield, campaigners against "killer robots" urged on Tuesday. The weapons, which could be ready for use within the next 20 years, would breach a moral and ethical boundary that should never be crossed,

Using voice to send text messages while driving is just as dangerous as texting with fingers, with driver response times significantly delayed no matter which method was used, a study released on Tuesday showed. The study by the Texas Transportation Institute at Texas A&M University was the first to compare voice-to-text and traditional texting on

France's embassy in Libya was hit by what appeared to be a car bomb on Tuesday, injuring two guards in the first such attack in the Libyan capital since the 2011 war that ousted Muammar Gaddafi. "There was an attack on the embassy. We think it was a booby trapped car," a French official told

Associated British Foods beat forecasts with a 20 percent rise in first half profit, driven by a stellar performance from its Primark clothing chain and a recovery in its grocery division. The firm said on Tuesday it had made underlying operating profit of 496 million pounds ($756 million) in the six months to March 2.

Top U.S. security officials face a grilling from lawmakers on Tuesday over whether authorities who have charged one man with the Boston Marathon bombings may have overlooked warning signs two years ago flagging the other suspect. Dzhokhar Tsarnaev, 19, was formally charged with using a weapon of mass destruction and malicious destruction of property resulting