May 24, 2013
From Picking up the Pieces After the Tornado in Moore, Oklahoma, one of 39 photos. Lightning from a thunderstorm strikes amid the wreckage of twisted cars and structures at Plaza Elementary School, where seven children were killed earlier in the week when a tornado hit Moore, Oklahoma, on May 23, 2013. (AP Photo/Brennan Linsley)

From Picking up the Pieces After the Tornado in Moore, Oklahoma, one of 39 photos. Lightning from a thunderstorm strikes amid the wreckage of twisted cars and structures at Plaza Elementary School, where seven children were killed earlier in the week when a tornado hit Moore, Oklahoma, on May 23, 2013. (AP Photo/Brennan Linsley)

May 21, 2013
From Photos of Tornado Damage in Moore, Oklahoma, updated - one of 38 photos.  Residents pass a destroyed car as they walk through a tornado-ravaged neighborhood of Moore, Oklahoma, on May 21, 2013. (AP Photo/Charlie Riedel)

From Photos of Tornado Damage in Moore, Oklahoma, updated - one of 38 photos. Residents pass a destroyed car as they walk through a tornado-ravaged neighborhood of Moore, Oklahoma, on May 21, 2013. (AP Photo/Charlie Riedel)

May 21, 2013
From Photos of Tornado Damage in Moore, Oklahoma, one of 30 photos. Here, an aerial photo of a neighborhood hit by a massive tornado in Moore, Oklahoma, on May 20, 2013. (AP Photo/Steve Gooch)

From Photos of Tornado Damage in Moore, Oklahoma, one of 30 photos. Here, an aerial photo of a neighborhood hit by a massive tornado in Moore, Oklahoma, on May 20, 2013. (AP Photo/Steve Gooch)

May 20, 2013
From A Week of Tornadoes, one of 25 photos. Lightning from a tornadic thunderstorm passing over Clearwater, Kansas strikes in an open field, on May 19, 2013. A massive storm front swept north through the central United States on Sunday, hammering the region with fist-sized hail, blinding rain and tornadoes, including a half-mile wide twister that struck near Oklahoma City. (Reuters/Gene Blevins)

From A Week of Tornadoes, one of 25 photos. Lightning from a tornadic thunderstorm passing over Clearwater, Kansas strikes in an open field, on May 19, 2013. A massive storm front swept north through the central United States on Sunday, hammering the region with fist-sized hail, blinding rain and tornadoes, including a half-mile wide twister that struck near Oklahoma City. (Reuters/Gene Blevins)

May 15, 2013
From Harley Davidson National Rally in China, one of 18 photos. A couple rides a Harley Davidson motorcycle during the annual Harley Davidson National Rally in Qian Dao Lake, in Zhejiang Province, China, on May 11, 2013. Around 1,000 Harley Davidson enthusiasts from all over China met at the rally, as part of the company’s 110-year anniversary. (Reuters/Carlos Barria)

From Harley Davidson National Rally in China, one of 18 photos. A couple rides a Harley Davidson motorcycle during the annual Harley Davidson National Rally in Qian Dao Lake, in Zhejiang Province, China, on May 11, 2013. Around 1,000 Harley Davidson enthusiasts from all over China met at the rally, as part of the company’s 110-year anniversary. (Reuters/Carlos Barria)

May 14, 2013
From Welcome Back to Earth, Commander Hadfield, one of 40 photos. The Russian Soyuz space capsule, carrying Canadian astronaut Chris Hadfield, U.S. astronaut Tom Marshburn, and Russian cosmonaut Roman Romanenko, lands some 150 km (90 miles) southeast of the town of Zhezkazgan in central Kazakhstan, on May 14, 2013. The first Canadian astronaut to command the International Space Station (ISS) landed safely in Kazakhstan with two crewmates on Tuesday, wrapping up a five-month mission aboard the ISS. (Reuters/Mikhail Metzel)

From Welcome Back to Earth, Commander Hadfield, one of 40 photos. The Russian Soyuz space capsule, carrying Canadian astronaut Chris Hadfield, U.S. astronaut Tom Marshburn, and Russian cosmonaut Roman Romanenko, lands some 150 km (90 miles) southeast of the town of Zhezkazgan in central Kazakhstan, on May 14, 2013. The first Canadian astronaut to command the International Space Station (ISS) landed safely in Kazakhstan with two crewmates on Tuesday, wrapping up a five-month mission aboard the ISS. (Reuters/Mikhail Metzel)

May 13, 2013
From Sichuan Earthquake: Five Years Later, one of 26 photos. Here, residents gather before a monument on the 5th anniversary of the 2008 Sichuan earthquake, on May 12, 2013, in Yingxiu township of Wenchuan county, Sichuan province. China. (AFP/Getty Images)

From Sichuan Earthquake: Five Years Later, one of 26 photos. Here, residents gather before a monument on the 5th anniversary of the 2008 Sichuan earthquake, on May 12, 2013, in Yingxiu township of Wenchuan county, Sichuan province. China. (AFP/Getty Images)

May 10, 2013
From A Trip to South Korea, one of 36 photos. A South Korean Buddhist hangs colorful lanterns to celebrate the forthcoming birthday of Buddha at the Chogye temple on May 3, 2013 in Seoul, South Korea. Buddha was born approximately 2,557 years ago, and although the exact date is unknown, Buddha’s official birthday is celebrated on the full moon in May in South Korea, which is on May 17 this year. (Chung Sung-Jun/Getty Images)

From A Trip to South Korea, one of 36 photos. A South Korean Buddhist hangs colorful lanterns to celebrate the forthcoming birthday of Buddha at the Chogye temple on May 3, 2013 in Seoul, South Korea. Buddha was born approximately 2,557 years ago, and although the exact date is unknown, Buddha’s official birthday is celebrated on the full moon in May in South Korea, which is on May 17 this year. (Chung Sung-Jun/Getty Images)

May 8, 2013
From Chinese DIY Inventions, one of 39 photos. Zhang Wuyi sits in his newly made multi-seater submarine at his new workshop near an artificial pool in Wuhan, Hubei province, China, on November 14, 2012. Zhang, a local farmer who is interested in scientific inventions, has independently made seven miniature submarines with several fellow engineers, one of which was sold to a businessman in Dalian at a price of 100,000 yuan ($15,855) in 2011. The submarines, mainly designed for harvesting aquatic products, such as sea cucumber, have a diving depth of 20-30 meters (66-98 feet), and can travel for 10 hours, local media reported. (Reuters/Stringer)

From Chinese DIY Inventions, one of 39 photos. Zhang Wuyi sits in his newly made multi-seater submarine at his new workshop near an artificial pool in Wuhan, Hubei province, China, on November 14, 2012. Zhang, a local farmer who is interested in scientific inventions, has independently made seven miniature submarines with several fellow engineers, one of which was sold to a businessman in Dalian at a price of 100,000 yuan ($15,855) in 2011. The submarines, mainly designed for harvesting aquatic products, such as sea cucumber, have a diving depth of 20-30 meters (66-98 feet), and can travel for 10 hours, local media reported. (Reuters/Stringer)

May 6, 2013
From On the Border, one of 40 photos. A section of the controversial US-Mexico border fence expansion project crosses previously pristine desert sands at sunrise on March 14, 2009, between Yuma, Arizona and Calexico, California. The barrier stands 15 feet tall and sits on top of the sand so it can lifted by a machine and repositioned whenever the migrating desert dunes begin to bury it. The almost seven miles of floating fence cost about $6 million per mile to build. (David McNew/Getty Images)

From On the Border, one of 40 photos. A section of the controversial US-Mexico border fence expansion project crosses previously pristine desert sands at sunrise on March 14, 2009, between Yuma, Arizona and Calexico, California. The barrier stands 15 feet tall and sits on top of the sand so it can lifted by a machine and repositioned whenever the migrating desert dunes begin to bury it. The almost seven miles of floating fence cost about $6 million per mile to build. (David McNew/Getty Images)

May 1, 2013
From Afghanistan: April 2013, one of 39 photos. An Afghan woman in a burqa walks along a road on a windy day on the outskirts of Kabul, Afghanistan, on April 16, 2013. (Reuters/Mohammad Ismail)

From Afghanistan: April 2013, one of 39 photos. An Afghan woman in a burqa walks along a road on a windy day on the outskirts of Kabul, Afghanistan, on April 16, 2013. (Reuters/Mohammad Ismail)

April 30, 2013
From The Netherlands Welcomes a New King, one of 29 photos. Newly-crowned Dutch King Willem-Alexander and Queen Maxima appear on the balcony of the Royal Palace with their children, from left: Catharina-Amalia, Ariane, and Alexia in Amsterdam, The Netherlands, on April 30, 2013. (AP Photo/Dusan Vranic)

From The Netherlands Welcomes a New King, one of 29 photos. Newly-crowned Dutch King Willem-Alexander and Queen Maxima appear on the balcony of the Royal Palace with their children, from left: Catharina-Amalia, Ariane, and Alexia in Amsterdam, The Netherlands, on April 30, 2013. (AP Photo/Dusan Vranic)

April 29, 2013
From Rescue Efforts Halted at Collapsed Bangladesh Building, one of 39 photos. Rescue workers attempt to rescue garment workers from the rubble of the collapsed Rana Plaza building, in Savar, 30 km (19 miles) outside Dhaka, Bangladesh, on April 28, 2013. Hope for survivors under the rubble of a building that collapsed outside the capital of Bangladesh faded on Sunday. With more than 900 people still counted as missing fears grew that the death toll could rise far beyond the latest figures. (Reuters/Stringer)

From Rescue Efforts Halted at Collapsed Bangladesh Building, one of 39 photos. Rescue workers attempt to rescue garment workers from the rubble of the collapsed Rana Plaza building, in Savar, 30 km (19 miles) outside Dhaka, Bangladesh, on April 28, 2013. Hope for survivors under the rubble of a building that collapsed outside the capital of Bangladesh faded on Sunday. With more than 900 people still counted as missing fears grew that the death toll could rise far beyond the latest figures. (Reuters/Stringer)

April 23, 2013
From Sichuan Earthquake Recovery, one of 39 photos. A rescuer walks in front of a damaged building after Saturday’s earthquake in Lingguan town of Baoxing county, Sichuan province, on April 22, 2013. Rescuers struggled to reach a remote, rural corner of southwestern China on Sunday as the toll of the dead and missing from the country’s worst earthquake in three years climbed to 208 with 11,000 injuries. The 6.6 magnitude quake struck in Lushan county, near the city of Ya’an in the southwestern province of Sichuan, close to where a devastating 7.9 quake hit in May 2008, killing 70,000. (Reuters/Aly Song)

From Sichuan Earthquake Recovery, one of 39 photos. A rescuer walks in front of a damaged building after Saturday’s earthquake in Lingguan town of Baoxing county, Sichuan province, on April 22, 2013. Rescuers struggled to reach a remote, rural corner of southwestern China on Sunday as the toll of the dead and missing from the country’s worst earthquake in three years climbed to 208 with 11,000 injuries. The 6.6 magnitude quake struck in Lushan county, near the city of Ya’an in the southwestern province of Sichuan, close to where a devastating 7.9 quake hit in May 2008, killing 70,000. (Reuters/Aly Song)

April 22, 2013
From Texas’s Fertilizer Plant Explosion, one of 40 photos. The wreckage of a fertilizer plant burns after an explosion at the plant in the town of West, near Waco, Texas last week, early on April 18, 2013. The deadly explosion ripped through the fertilizer plant late on Wednesday, injuring more than 160 people, leveling dozens of homes and damaging other buildings including a school and nursing home, authorities said. (Reuters/Mike Stone)

From Texas’s Fertilizer Plant Explosion, one of 40 photos. The wreckage of a fertilizer plant burns after an explosion at the plant in the town of West, near Waco, Texas last week, early on April 18, 2013. The deadly explosion ripped through the fertilizer plant late on Wednesday, injuring more than 160 people, leveling dozens of homes and damaging other buildings including a school and nursing home, authorities said. (Reuters/Mike Stone)