The first calculation was depend on my life before in Shanghai. Because I mainly lived in the dormitory, it seems that the consumption of all the energy is relatively low. Although the living habit is still the same in the America, the resources I’m consuming is unexpectedly high. I think the result may caused by the transportation means. I used to ride a bike to class everyday but now taking a bus instead. And I hardly travelled by plane before, but I have to fly a very long distance from China to American every year. 10 times of global acres of the Earth’s productive area higher than before is still quite shocking.