shuaigay

　　Generation Earth is the story of our manmade world 　　In the last generation, we have changed the face of the Earth on a scale unimaginable to our ancestors. Generation Earth discovers how villages in China have been transformed into cities of millions, the tallest building in the world dwarfs the skyscrapers of America, and we have built a dam so big that it has changed the rotat... (展开全部)