Belarussian ice swimmers celebrate the Orthodox Christmas holiday in the forest near the village of Primorie, near Minsk, Jan. 8., 2012. (Viktor Drachev/AFP/Getty Images)

Riders take the subway in underwear as part of the 2012 No Pants Subway Ride, Jan. 8, 2012 in New York City. Started by Improv Everywhere, the goal is for riders to get on the subway train dressed in normal winter clothes (without pants) and keep a straight face. (Timothy A. Clary/AFP/Getty Images)

A sloth enjoys a warm lamp on a winters day at the zoo in Dortmund, western Germany, Jan. 9, 2012. (Martin Meissner/AP Photo)

Women wearing kimonos greet Disney character Mickey Mouse during the annual Coming-of-Age Day at Tokyo Disneyland, just outside of Tokyo, Japan, Jan. 9, 2012. (Kazuhiro Nogi/AFP/Getty Images)

Nepalese Hindu women warm themselves up beside fires after taking a bath in the holy Shali River on the outskirts of Kathmandu, Jan. 9, 2012. Hundreds of women in the Himalayan nation have started a month-long fast in the hope of a prosperous life and conjugal happiness. (Prakash Mathema/AFP/Getty Images)

Safeway employee Sherrie Brown is comforted by Leroy Wood, while participating in a ringing of the bells ceremony at a memorial for the six people that lost their lives in a deadly shooting last year in the parking lot of the La Toscana Village Safeway, Jan. 8, 2012 in Tucson, Ariz. (Jonathan Gibby/Getty Images)