Hillary Clinton fields tough question on Benghazi; Islamic militants re-armed after Gadhafi’s fall; Pentagon lifts ban on women in combat; Debt ceiling limit extended to May; Arctic air blankets the US; ADHD diagnoses rise 24 percent in a decade; ‘Facebook envy’ leaves people frustrated; Sleep depri
(Reuters) - Not all new countries are really new. Some are born almost fully formed; others have to start from nothing. Full story
Researchers who followed one million women found those who smoked a pack a day starting in their teens reduced life expectancy by an average of 11 years, according to a new study published in The Lancet. NBC’s Robert Bazell reports.