Explore one of Earth's most vital but overlooked habitats and learn how grasslands could slow climate change by soaking up more carbon than forests do. Meet key species, such as bison and pumas, that could restore this resource and heal our planet.

Trek to the planet's quickly melting poles, where animals are giving scientists clues about our future existence. Learn how the movements of polar bears, penguins, and other arctic creatures could help humans map (and prevent) global warming.

Go to extremes, from the Sahara to the outback, where animals are teaching us how to survive in our heating world. Shelter in caves with chimps, see camels sip salt water, and listen as zebra finches sing to their eggs to make their chicks smaller.