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Sean Morey, then with the Arizona Cardinals, celebrates after blocking a punt against the Seattle Seahawks in 2007. Morey, who suffers from post-concussion syndrome, retired from the NFL in 2010 on the advice of doctors.
Stephen Dunn/Getty Images
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Cannonball jellyfish soak up the sun on a South Carolina beach. Fishermen are now pursuing the pest that used to clog their shrimping nets.
Courtesy of Steven Giese
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New Jersey Gov. Chris Christie listens during a Jan. 9 news conference in which he denied any knowledge of lane closings on the George Washington Bridge when they occurred in September.
Mel Evans/AP
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Linda Door protested outside the U.S. Supreme Court as it began hearing arguments on the constitutionality of the Affordable Care Act in March 2012.
Carolyn Kaster/AP
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Andrew Ng and Daphne Koller, Stanford University computer science professors who started Coursera, pose for a photo at the Coursera office in Mountain View, Calif., on Aug. 2, 2012.
Jeff Chiu/AP
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Dark blue: It's going to take a foot or more of snow to close schools. Green: Any snow's going to shut things down.
reddit.com/user/atrubetskoy
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