The dogs of Iditarod musher Allen Moore, from Two Rivers, Alaska, howl as they prepare to leave the Takotna checkpoint during the Iditarod Trail Sled Dog Race on Thursday, March 6, 2014.
Canada's Braydon Luscombe skis during the Men's Downhill Standing training at the 2014 Sochi Paralympic Winter Games at the Rosa Khutor Alpine Center, March 6, 2014.
A man widely believed to be Bitcoin currency founder Satoshi Nakamoto is surrounded by reporters as he leaves his home in Temple City, California March 6, 2014.
Pro-Russian demonstrators clash with riot police during a protest rally in Donetsk March 6, 2014. Ukraine flew its flag over the government headquarters in the eastern city of Donetsk on Thursday and ejected pro-Moscow demonstrators that occupied it, ending a siege that Kiev had seen as part of a Russian plan to create a pretext to invade.
The Royal Canadian Navy ship HMCS Protecteur arrives at Joint Base Pearl Harbor Hickam after it was towed by the U.S. Navy ship USS Sioux after a fire disabled it while at sea in Honolulu, Hawaii, March 6,2014.
A man takes shelter from the rain with an umbrella as he walks along the beach at English Bay in Vancouver, B.C. Thursday, March 6, 2014.
(JONATHAN HAYWARD/THE CANADIAN PRESS)
An Aymara woman attend the 29th anniversary celebrations of the foundation of El Alto city.
A Ukrainian serviceman (rear) looks at uniformed men, believed to be Russian servicemen, standing guard at a Ukrainian military base in the village of Perevalnoye, outside Simferopol, March 6, 2014. Crimea's parliament voted to join Russia on Thursday and its Moscow-backed government set a referendum within 10 days on the decision in a dramatic escalation of the crisis over the Ukrainian Black Sea peninsula.
This combination image made available by NASA on Thursday, March 6, 2014 shows a series of photos from the Hubble Space Telescope recording the disintegration of an asteroid from Oct. 29, 2013 to Jan. 14, 2014. Asteroid P/2013 R3 was detected in September 2013 in the asteroid belt between the orbits of Mars and Jupiter. It appeared as a fuzzy object. Hubble uncovered 10 objects, each with dusty tails. The four largest fragments are up to 656 feet across. Scientists say they've never seen anything like this before, and theorize sunlight is slowing pulling the asteroid apart by increasing its rotation.
(NASA, ESA, UCLA, D. Jewitt/AP)
A group of people pose for pictures with Wayne Garrett and Caitlind Brown of Canada's light installation "CLOUD" during a media preview of the i Light Marina Bay festival in Singapore March 6, 2014. A total of twenty-eight groups of local and international artists took part in the biennial sustainable light art festival which will run from Friday to March 30 along Marina Bay.
Matey Jaworskyj, 7, runs under a large Ukrainian flag during a demonstration calling for further action in Ukraine by the U.S. government, outside the White House in Washington, March 6, 2014. Obama reiterated America's desire to unite the international community in opposition to what he called Russia's violation of international law Thursday, and said that a referendum proposed by the Crimean Parliament to break away from Ukraine would be unacceptable.
Follow us on Twitter: