Discovery has dubbed Tom Selleck the voice of North America, its next epic seven-part series premiering May 19. “I’ve been a fan of Discovery’s nature programming for years, and I am truly honored to be narrating their next great series. I think people will be captivated by North America,” Selleck said in the announcement. For Discovery’s first independently-produced natural history series, crews traveled the continent for more than three years. The “Making Of” episode chronicling the production team’s challenges will show how they battled Hurricane Irene and other natural disasters. Never-before-seen sequences in the series include grizzly bears diving in more than 20 feet of water to grab salmon in Alaska and the elusive desert jaguar in Mexico.