Chuck Hagel, bracing for a bruising Senate confirmation as the next US defense secretary, pledged "total support" for Israel on Monday after lawmakers criticized his Middle East views.
US President Barack Obama will host Afghan President Hamid Karzai at the White House on Friday for talks centered on the long-term security compact between the two countries.
Secretary of State Hillary Clinton received a standing ovation from her staff and an American football helmet to protect her from Washington's hard knocks as she returned to work after a health scare.
A US judge Monday ordered Catholic leaders in Los Angeles to identify senior church officials accused of sexually abusing children, in a move welcomed by campaigners for victims.
US President Barack Obama on Monday nominated controversial former Republican senator Chuck Hagel to lead the Pentagon and proposed that hard-nosed counterterrorism czar John Brennan to head the CIA.
The Milky Way contains at least 17 billion planets the size of Earth, and likely many more, according to a study out Monday that raises the chances of discovering a sister planet to ours.
The US Defense Department has prepared plans for a smaller presence in Afghanistan after the White House insisted on examining the option of leaving fewer troops in the country.
Former US governor Bill Richardson said Friday he hopes to assess what is happening in North Korea under its new leader Kim Jong-Un during what he hopes will be a "positive" visit.
The frequency and volatility of El Nino, a weather pattern that hammers the tropical Pacific Ocean every five years or so, does not seem linked to climate change.
Industry tracker comScore on Thursday reported that US shoppers spent a total of $42.3 billion online during the year-end holiday season -- a 14 percent jump from the same period in 2011.
British actress Helen Mirren, who won an Oscar for her portrayal of Elizabeth II in "The Queen", on Thursday received a star on the Hollywood Walk of Fame.
The United States on Thursday criticized a planned visit to North Korea by Google chairman Eric Schmidt, calling it ill-timed in the wake of Pyongyang's widely condemned rocket launch last month.
A fist-sized meteorite nicknamed "Black Beauty" could unlock vital clues to the evolution of Mars from the warm and wet place it once was to its current cold and dry state.
The FBI suspected that US-born Al-Qaeda cleric Anwar al-Awlaqi, killed in a 2011 drone strike in Yemen, could have bought air tickets for three of the 9/11 hijackers before the attacks.
The first film based on the life of legendary Apple co-founder Steve Jobs will be released in April, according to a distribution deal for "jOBS" announced on Thursday.
With nearly 100 new members, the US Congress convened Thursday fresh from the year-end "fiscal cliff" fiasco, as lawmakers cast a wary eye towards the tough budget battles ahead.