Following the wildlife in Yellowstone National Park over the changing seasons.
Episode 1: Survival: Life at the Edge of Nature
Yellowstone National Park is among the harshest, most dynamic landscapes on earth. Its summers scorch, its winters are almost unsurvivable, and it is at the mercy of rampant wildfires, explosive geysers, earthquakes, boiling hot springs and rivers powerful enough to cut stone. As this first programme reveals, only a few creatures can respond to this battery of the elements.