Meet farmers who are fighting against the excesses of modern and intensive agriculture, including pesticides and genetically modified organisms. To foster sustainable development, consumers can influence agricultural practices by changing their eating habits.

Visit South Africa, an exemplary country for the protection of biodiversity, where cohabitation with the wild introduces a new humanistic philosophy. Yann Arthus-Bertrand meets individuals who have taken on the protection of wild animals such as the elephant, the seal and the white rhino.

Many of the world's waterways are dried up or polluted. In Argentina, a dam at Iguazu Falls affects the local population and environment. Yann Arthus-Bertrand also visits China and its disproportionate Three Gorges dam, as well as the Botswana Okavango, the Aral Sea and New York.

Madagascar has experienced extreme deforestation. Botanists are attempting to protect the native baobab trees and other island fauna, as vegetation is crucial to sustaining life. Host Yann Arthus-Bertrand meets those who have committed their lives to protecting the world's forests.