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  • A Meerkats stands up on a weighing machine at London Zoo during the annual weighing and measuring of the animals at the zoo. (AP Photo/Alastair Grant)

  • Firefighters work at the site of a wildfire in Tabuyo del Monte, near Leon. Numerous wildfires have broken out across Spain in the sweltering heat in recent weeks, an extra headache for authorities struggling to get the country out of its financial crisis and recession. (Photo credit: CESAR MANSO/AFP/Getty Images)

  • Beach visitors of different sorts watch the sunset in Dauphin Island. (AP Photo/Dave Martin)

  • American rock band Guns N' Roses lead guitarist Slash poses with 72-year-old Australian wildlife warrior Bob Irwin, holding Kalamata, a four-meter olive python, and Wickham, a saltwater crocodile respectively, at the launch of the Bob Irwin Wildlife and Conservation Foundation Inc. in Brisbane, Australia. The foundation was formed to provide ongoing support to Bob Irwin in his life long commitment to preserving the planet's wildlife. (AP Photo/Tertius Pickard)

  • Mars Interior. Artist rendition of the formation of rocky bodies in the solar system - how they form and differentiate and evolve into terrestrial planets. NASA/JPL-Caltech

  • The peloton rides through a canyon during stage two of the USA Pro Challenge from Montrose to Crested Butte in Gunnison, Colorado. (Photo by Doug Pensinger/Getty Images)

  • A race horse and jockey made from edible Yorkshire farm produce attracts attention from racegoers as it stands close to the jockeys weighing room during day one of the 2012 Ebor Festival at York Racecourse. Photo credit: John Giles/PA

  • The Flame is held at the top of Mount Snowdon accompanied by LOCOG Chairman Lord Sebastian Coe after it was created using the traditional technique of rubbing flint together to create sparks and kindle a flame. PA

  • South Koreans wearing gas masks run out of a building during a civil defence drill in Seoul on August 22, 2012. The drill comes amid high cross-border tension as Pyongyang denounced an annual joint military exercise between the US and South Korea. (Photo credit: JUNG YEON-JE/AFP/Getty Images)

  • A model showcases jewellery designer Laksh Pahuja creations during the third day of India International Jewellery Week 2012 (IIJW) in Mumbai AFP PHOTO (Photo credit: STR/AFP/Getty Images)

  • A members of the young greens party, covered with green paint, protests against 'Greenwashing', during the opening of the Europe-Ecology-Greens party (EELV) ecologists summer days in Poitiers, centre France. (Photo credit: ALAIN JOCARD/AFP/Getty Images)

  • Police, firemen and emergency rescue workers stand around the wreckage of a derailed S-Bahn commuter train on August 21, 2012 in Berlin, Germany. The train derailed shortly before noon after a railway switch malfunctioned, causing the front part of the train to go on one track and the rear part of the train to go onto another. Five passengers were lightly injured. (Photo by Sean Gallup/Getty Images)

  • Riders take on the "Remix" ride on the midway of the Kentucky State Fair in Louisville (AP Photo/Timothy D. Easley)

  • Manuel Sanchez Gordillo (3rd R), the mayor of the village of Marinaleda and a member of the regional parliament for the United Left party in the Andalucian regional parliament, the secretary general of the SAT Andalucian trade union, Diego Canamero (L), and activists peacefully leave the property of the Duke of Moratalla, a member of Spain's royal family, continuing their protest march toward Cordoba. Andalucia, which had a major construction industry before the bubble burst, now has an unemployment rate of nearly 34 percent, higher than Spain's overall rate of nearly 25 percent. (Photo credit: CRISTINA QUICLER/AFP/Getty Images)

  • US President Barack Obama shakes hands with supporters after delivering remarks during a campaign event at Truckee Meadows Community College in Reno, Nevada. (Photo credit: JIM WATSON/AFP/Getty Images)

  • Israeli arabs woman enjoy the beach in Tel Aviv, Israel during the third day of Eid al-Fitr. Eid al-Fitr. One of the most important holidays in the Muslim world, Eid al-Fitr is marked with prayers, family reunions and other festivities. (AP Photo/Oded Balilty)

  • A robot that serves soda cans stands on a table at the Campus Party 2012 technology festival in Berlin, Germany. The Campus Party brings together 10,000 technology enthusiasts, hackers, nerds and blogists for five days to concentrate on finding solutions to five problems proposed through the European Digital Agenda from the European Commission. (Photo by Sean Gallup/Getty Images)