By using material filmed by the Pumpkin team around the world, this resource brings ecosystems to life. Examples include the Canadian Tundra, tropical rainforests in the Amazon and Borneo and savannah and desert environments in Sub-Saharan Africa. After exploring the four key characteristics common to all ecosystems, the programme explains how latitude, precipitation, altitude and proximity to the coast combine to influence the distribution of biomes. The final section examines the different physical and human challenges and how they impact on an ecosystem's dynamic equilibrium.

Originally released by Pumpkin TV, 2021. Streaming video file encoded with permission for digital streaming by Infobase on April 26, 2022.