Leaves are covered in frost, Nov. 13, 2011 at the “Planten un Blomen” park in Hamburg, northern Germany. (Christian Charisius/AFP/Getty images)

Athletes compete during men’s Atapuerca Cross Race, near Burgos, northern Spain, Nov. 13, 2011. (Cesar Manso/AFP/Getty Images)

Yemeni anti-regime protesters flash the V-sign for victory as they stand behind a portrait of President Ali Abdullah Saleh, during a protest in Sanaa, Nov. 14, 2011. (Mohammed Huwais/AFP/Getty Images)

Italian Prime Minister Silvio Berlusconi leaves his residence in Rome, Palazzo Grazzioli, Nov. 13, 2011 the day after he resigned. Italy readied a new government after the momentous resignation, with former European Union commissioner Mario Monti tipped to take over amid a debt crisis.   (Gabriel Bouys/AFP/Getty Images)

Madonna parties with DJ Producer Martin Solveig at The Smirnoff Nightlife Exchange Project, Nov 12, 2011, in New York. (Kevin Mazur/Getty Images)

Software engineer and laserlight specialist Andre Daubmann poses amidst his laser show “LichterMehr” at the Universum Science Center in Bremen, Germany, Nov. 12, 2011. (Ingo Wagner/AFP/Getty Images)