1. Earth
Avsnitt 1 - Earth, Säsong 1
Stories of how animals react to Earth's extremes, from humpback whales to tiny butterflies and savanna chimpanzees.
2. Islands
Avsnitt 2 - Islands, Säsong 1
From the Galapagos Islands to the edge of Antarctica, island wildlife reveal insights into the rapidly changing planet.
3. Heat
Avsnitt 3 - Heat, Säsong 1
Animals go to extraordinary lengths to survive in the hottest and driest extremes, from the Sahara Desert to Australia.
4. Ice
Avsnitt 4 - Ice, Säsong 1
Polar bears in the Arctic, penguins in Antarctica and other animals on icy islands can reveal changes taking place at the planet's frozen extremes.
5. Grasslands
Avsnitt 5 - Grasslands, Säsong 1
Scientists take a look at animal species with the power to transform and restore grasslands.
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