Denmark previously held this distinction, according to the latest World Happiness Report.
Prosecutors seeking the death penalty for Dzhokhar Tsarnaev, convicted of conducting the 2013 attack in Boston, rested their case on Thursday.
President Ashraf Ghani has reached out to Pakistan and China during the first seven months of his tenure.
Minnesota declared a state of emergency on Thursday over a fast-spreading strain of avian flu that has led to the extermination of more than 7.3 million birds in the country. It followed Wisconsin's action on Monday.
Vice President Joe Biden said on Thursday the United States would deliver new F-35 fighter jets to Israel next year to help its ally maintain its military edge in the Middle East.
The Russian Defense Ministry said U.S. troops were training Ukrainian forces in the conflict zone in eastern Ukraine, but the Pentagon flatly denied it, accusing Moscow of a "ridiculous attempt" to obscure its own activity in the region.
The State Department was reportedly concerned about Bill Clinton's dealings in Saudi Arabia.
U.S. Under Secretary Wendy Sherman and Tehran's Deputy Foreign Minister Abbas Araqchi met in Vienna on Thursday in the latest push to secure a final nuclear deal by a June 30 deadline, Iranian media said.
The e-commerce giant revealed sales figures for its cloud computing unit, Amazon Web Services, for the first time.
No merger with Time Warner Cable, and fewer options as the feds effectively cap the size of the nation's largest cable TV and broadband company.
France may pay back the money Russia paid for the Mistral ships that haven't been delivered.
Vice President Joe Biden spoke Thursday about the urgent need to stop sexual assault on college campuses.
Public four-year institutions grew more expensive, but so did the likelihood that black and Hispanic students would choose to enroll elsewhere, the study's author said.
Relatives of the disappeared are linking up with U.S. activists fighting for migrants' rights and against police brutality.
The former four-star general will have to pay a higher fine than expected for his involvement in leaking military secrets to his lover.
Navinder Sarao, who regulators say helped spark a market meltdown in 2010, cast himself as "an old school point and click prop trader."
Loretta Lynch becomes the first African-American woman to lead the Justice Department, after waiting 167 days to be confirmed.
The convoy was allegedly on its way to arm Houthi rebels, but turned back before encountering the U.S. Navy.
Speaker Boehner says House committees will wait for results of the administration review.
Federal scientists have identified 17 areas across eight states that have seen a substantial rise in man-made earthquakes since 2000.
A decade after Fiorina left HP her legacy is still the subject of vigorous debate.
A strong U.S. dollar continues to drag on corporate profits during earnings season.