As the planet warms up, the ice at all three poles - the Arctic, Antarctic, and the Himalayas - is melting fast. In Greenland, we join an Innuit hunter navigating the changing sea ice.
As temperatures rise, wildfires are raging out of control. We meet the Yurok Tribe of California, who are drawing upon traditional knowledge to restore the land and prevent future infernos.
Earth's oceans cover 70% of our planet, and they're crucial for life. In Antarctica, we join a New Zealand whale rider on an expedition to find and care for a vital part of the ecosystem.