Jared's plane has crashed in the Alberta wilderness, and Kyle is first on the scene. When Jared insists on hiking up the highest hill in search of cell phone reception, Kyle hesitates; his Cree grandmother has always forbidden him to go near it. There's no stopping Jared, though, so Kyle reluctantly follows. After a night spent on the hilltop -- with no cell service -- the teens discover something odd: the plane has disappeared. Nothing in the forest...

Each season, as the ever-thinning Arctic ice recedes, polar bears face a daunting challenge; Grizzly bears in British Columbia must use ingenuity and fancy footwork to collect their catch; The annual rains of the Serengeti draw in the greatest concentration of large animals on Earth; Each year, billions of sardines flood South Africa's east coast creating an action-packed feeding frenzy; Thousands of animals make the long trek toward the life saving...