In what ways you are a global citizen

As a global citizen, I think environmental protection is the most important thing, because we only have one Earth, if Earth dead, so will the human kind.
How to protect our environment? It starts in activities of daily livings. First is to reduce the dilapidation of natural resources like: using bags you prepared, not plastic bags, using paper in both sides not just in one side, and prepared tableware yourself do not use those bamboo chopsticks and plastic spoons they harm the environment.
Second is to recycle those things we can use to make other things, like: paper, plastic bottles, can or glass. Or things that are deleterious to our environment, like: batteries or fluorescent tubes. These will made the life of dumps and incinerators.
Third is reducing pollutions we made, by walk or use public transportation systems is better than driving your personal vehicles. The last Saturday I saw a program introduced a department planted some plants on there roof, so that they did not use air conditioning in summer. That is a wonderful idea to the environmental protection. Using more green plants and running water can cool down the degree indoors, it can both saving electricity and protecting our environment, and also saving money because air conditioners cost a lot. Green plants and running water can also made the environment more beautiful.
These are some ways to make our environment more beautiful. We only have this earth, and there is no way out, so let we cherish it, and leave a beautiful Earth to our children.