Route engineer Richard Winter stands in front of a pile of road salt at the Birchanger Depot on November 8, 2011 near Bishop's Stortford, England. (Photo by Peter Macdiarmid/Getty Images)
DAYTONA BEACH, FL - NOVEMBER 15: Dale Earhhardt Jr., driver of the #88 National Guard/Diet Mountain Dew Chevrolet races with Joey Logano, driver of the #20 Home Depot Toyota during the NASCAR Aerodynamic and Fuel Injection Test at Daytona International Speedway on November 15, 2011 in Daytona Beach, Florida. (Photo by Jerry Markland/Getty Images for NASCAR)
David Reutimann, driver of the #00 Aaron's Dream Machine Toyota, Brian Vickers, driver of the #83 Red Bull Toyota, and Denny Hamlin, driver of the #11 FedEx Express Toyota, collide after an incident in the NASCAR Sprint Cup Series Jeff Byrd 500 Presented By Food City at Bristol Motor Speedway on March 20, 2011 in Bristol, Tennessee.
Moscow riot policemen detain an activist during an unauthorized protest anti-Putin opposition rally to defend Article, 31 of the Russian Constitution which guarantees the right of assembly, in Triumfalnaya Square in Central Moscow, Russia, on December, 31, 2011 (Photo by Konstantin Zavrazhin/Getty Images)
Workmen use a crane to winch a large stone head, created by British sculptor Emily Young, into Berkeley Square on February 2, 2012 in London, England. (Photo by Oli Scarff/Getty Images)
CHIP is a prefab, net-zero solar-powered house designed and built by a student-run team from two Southern California schools: Southern California Institute of Architecture (SCI-Arc) and California Institute of Technology (Caltech). The house is the team's entry for the U.S. Department of Energy Solar Decathlon 2011 competition.