The Japanese supercomputer K, pictured in June 2012 at the RIKEN Advanced Institute for Computational Science in Kobe, western Japan. The K computer is currently ranked No. 3 on a list of the 500 fastest supercomputers.
Team Sky rider Chris Froome of Britain, with the race leader's yellow jersey, celebrates his overall victory on the podium after the 109.5-km (68 mile) final 21st stage of the 102nd Tour de France.
Syrian President Bashar Assad speaks during his meeting with the heads and members of public organizations and professional associations in Damascus, on Sunday. Assad acknowledged that the fight against rebels had suffered setbacks, but vowed to win against insurgents.
Secretary of State Hillary Clinton testifies in January 2013 before the Senate Foreign Relations Committee on the attack on the U.S. mission in Benghazi, Libya.
Mandel Ngan/AFP/Getty Images
Georg Kapsch, President of the Federation of Austrian Industry, holds an issue of The Economist during a news conference in Vienna last year. Britain's Pearson PLC says it's in talks to sell its 50 percent share in The Economist Group.
President Obama and Kenya's President Uhuru Kenyatta onstage after delivering remarks at the Global Entrepreneurship Summit at the United Nations compound in Nairobi, on Saturday.
Zachary Gallegos, 23, stands guard outside the Armed Services Recruiting Center on Thursday in Sioux Falls, South Dakota. The Pentagon has asked such self-appointed "armed citizens" to leave, citing security concerns.
President Obama is hugged by his half-sister, Auma Obama, accompanied by Kenya's President Uhuru Kenyatta (right) as he arrives at the Jomo Kenyatta International Airport in Nairobi on Friday.