In Florida, the Everglades swamp is being restored at great expense. 15 billion dollars are being invested over thirty years to save the water supply of the entire region. In California, on the crests of the Tehachapi hills, the world’s largest wind farm is being discovered. In China, the fermentation of excrement produces gas, mainly methane, which, when burned, is transformed into energy called biogas. In California, the Taft oil field was discovered, one of the largest in the world: nearly 10,000 wells on over 52,000 hectares. Then Haiti fights to save itself from deforestation. In Utah, Salt Lake City is a good example of how we live today: there are 37 cities in the world with more than 8 million inhabitants. In the Eure-et-Loir region of France, they decided to build the ideal house to give a house that saves 85% of energy.