In 200,000 years on Earth, humanity has upset the balance of the planet, established by nearly four billion years of evolution. The price to pay is high, but it's too late to be a pessimist: humanity has barely ten years to reverse the trend,By bringing us unique footage from over fifty countries, all seen from the air, by sharing with us his wonder and his concern, with this film Yann Arthus-Bertrand lays a foundation stone for the edifice that, together, we must rebuild.