Many of North America’s grizzly bear populations are under threat, but when a mother grizzly dies, typically her cubs are euthanized or put into zoos because it’s assumed they could not survive on their own. “Grizzly Rewild” showcases five orphaned grizzly cubs being reared at the world’s only grizzly rewilding facility in Smithers, British Columbia and then follows them being released back to the wild wearing GPS collars. In a ground-breaking study, eminent bear biologist, Dr Lana Ciarniello tracks the progress of these bears over the next year to see whether they can survive without a mother to teach or protect them. It’s the first time rewilded grizzlies have ever been filmed readapting to life in the wild. If they survive - grizzly rewilding could become widely adopted and help rebuild North America’s declining grizzly populations.