Super Bear Format:DVD San Francisco was the epicenter

San Francisco was the epicenter of the American rave scene and witnessed some legendary events that began in the early '90s

Crandall's new co-pilot helps send ratings sky-high

While confronting notions of love and loss

following a traumatic childhood

& liberation that eluded him a century and a half ago

Super Bear Format:DVD San Francisco was the epicenterNational Geographic examines the incredible size, speed and strength of some of the world's biggest bears the polar bear, brown bear and black bear. All native to North America, these formidable creatures can weigh more than 1,000 pounds, outrun an Olympic sprinter and take out its prey with a single bite or swipe of the paw. Watch as National Geographic uses science, including MRI imaging, to deconstruct these bioengineering marvels to reveal the