NEW YORK - Discovery Channel says Bear Grylls, rugged adventurer and star of its popular "Man vs. Wild" series, has been injured during an expedition in Antarctica.

It says Grylls sustained a shoulder injury in a fall, and he is headed back home to Britain for medical treatment and an assessment of the severity of the injury.

He was not filming for Discovery, but instead was taking part in an independent expedition.

The 34-year-old Grylls has hosted "Man vs. Wild," on which he strands himself in remote locations to demonstrate survival techniques, since November 2006.

The former British Special Forces member recently published "Man vs. Wild: Survival Techniques for the Most Dangerous Places on Earth."