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Yo Gabba Gabba creators — ©Robert Gallagher
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Polar Bear falling through ice — ©Steven Kazlowski
/ Alaska Stock
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Particle Accelerator — ©Maxmillan Brice / Cern
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Deforestation lumberer — ©Dimas Adrian / Getty
Images
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Obama economic team — ©Pete Souza / White House
/ Getty Images
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Shawn Johnson, gymnast — ©Jed Jacobsohn / Getty
Images
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Obama family celebrates election — ©Joe Raedle
/ Getty Images
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Chinese president, Hu Jintao — ©Gianluigi Guercia
/ Getty Images
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Mars rover — ©NASA
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Rainy stock market chart — ©Dominic Lipinski
/ Landov
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Camels in front of city skyline — ©Steve Crisp
/ Reuters
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Brain Illustration — ©Leigh Wells
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Bishop with Digital Camera — ©Philadelphia Inquirer / MCT /
Landov
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Jordanian Girl and Doll — ©Ali Jarekji / Reuters
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Going Green Illustration — ©Ryan Snook
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Rainbow and Wind Turbines — ©Vincent West / Reuters
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Firefighter — ©Robert Gauthier / Los Angeles
Times
