Two tranqualized sub-adult polar bears a

Two tranqualized sub-adult polar bears are headed out of town after spending two weeks in the "Polar Bear Jail", getting a tracking lip tattoo, a tracking ear tag, a tooth pulled for research, and a through measuring for size, and are lifted by helicopter about 40 miles (65 kms) out of town, 16 November 2007, from Churchill, Mantioba, Canada. Polar bears return to Churchill, the polar bear capital of the world, to hunt for seals on the icepack every year at this time and remain on the icepack feeding on seals until the spring thaw. AFP PHOTO/Paul J. Richards (Photo credit should read PAUL J. RICHARDS/AFP via Getty Images)