Ice: Trek to the poles, where animals are giving scientists clues about our future. Learn how polar bears, penguins and other arctic creatures can help us map global warming. (S1, ep 4) [S]
Heat: Travel from the Sahara to the outback, where animals are teaching us how to survive in our heating world. Shelter with chimps and hear zebra finches singing to their eggs. (S1, ep 3) [S]
Islands: Journey from the GalÂapagos to Antarctica to see how sea lions, finches, monkeys and other wildlife are finding surprising solutions to climatic problems. (S1, ep 2) [S]
Earth: Travel to the ends of the Earth and meet the animals - from butterflies to humpback whales - that are adapting their behaviour and helping us understand our planet. (S1, ep 1) [S]