From the frozen poles to the searing deserts, this episode shows how animals have come up with strategies to survive the uneven amounts of sunlight that fall on our planet.

Originally released by BBC Worldwide Learning, 2021. Streaming video file encoded with permission for digital streaming by Infobase on April 30, 2021. This five part series will show how the forces of nature - weather, ocean currents, solar energy and volcanoes – drive, shape and support Earth’s great diversity of life. In doing so, it will reveal how animals are perfectly adapted to whatever the environment throws at them.