Nature's Microworlds journeys to some of the planet's most remote habitats and looks at the ecosystems that have developed there. In this episode, Steve Backshall investigates what makes the Okavango Delta in Botswana a diverse, wildlife rich place, and looks at how an inland delta can exist. Learn how plants and hippos engineer their environment to perpetuate a cycle between swamp and grassland. A BBC Production.

Originally released by BBC Worldwide Learning, 2012. Streaming video file encoded with permission for digital streaming by Infobase on October 03, 2015.