2. Fire

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.

3. Water

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.

4. Earth

As Earth's climate changes, the once-stable natural systems we rely upon are being thrown into chaos. In the Amazon, we meet a family making a difference and preserving the rainforest.