11 years ago
2
China Used More Cement In The Last Three Years Than The US Used In The Entire 20th Century
The significance of cement can't be understated. A powdery substance made with calcined lime and clay, it is a binder that enables the creation of concrete (along with water and gravel or sand). Concrete, according to Smil (whom Gates calls his favorite author), is the most important man-made material in history. It has been used in everything from the Pantheon to the Hoover Dam to China's incredibly big Three Gorges Dam.
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Thats incredible! Too bad a lot of it is being used to build mass produced empty cities that no one wants to move to.
True, I'v been there in May. So many "Ghost towns" around. :/