In this installment, the team looks at ways to achieve equilibrium between sustainable development and the growth needed to support 7 billion people.

With the world's energy supplies dwindling, host Yann Arthus-Bertrand heads to the most oil-dependent country on Earth: the United States, where he looks at life without oil and the production of alternative energy resources for the future.

Discover why fresh water is the most precious resource on Earth, vital to life and prosperity, but is also one of the most threatened, with spectacular scenery of canyons, glaciers and waterfalls, as well as man-made structures.

From microscopic bacteria to the largest animals, this installment explores the incredible biodiversity of the Earth, highlighting the interdependence of the planet's inhabitants.

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.

Covering 72 percent of the planet, the sea is an extensive, but not inexhaustible, resource. This episode sheds light on how to protect it and explores humankind's interdependence with the sea.

As man's impact on Earth reaches an all-time high, meet innovators who are attempting to reverse the damage and write a new contract with nature. In scenes across the globe from America to China, this exploration of man's influence on the Earth also includes discussion on how to lighten it.

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.