In the article Center for American Progress

     关于美国的进步，作者指出，美国每年产生巨额的垃圾，其中一些是通过垃圾填埋场，这是对环境有害的处置方法。   

     In the article Center for American Progress, the author points out that United States generates huge amount of trash per year and some of them are disposed through landfill, which is harmful to the environment. Even though in recent decades, United States has been putting more efforts in recycling the trash, it still pays insufficient attention to the alternative method: energy-from-waste, EfW. The main take of EfW facilities is to generate clean electricity from the waste, which can both reduce the deteriorating pollution and benefit us again. Moreover, EfW not only reduce greenhouse gas emission, but also is better than the method of trapping methane. Therefore, the author recommends that the United States can attach higher attention to EfW and create a better renewable portfolio standard, especially at this time when its population keeps growing and its waste keeps increasing.

One issue that I am highly interested in is that EfW can reduce greenhouse gas emission. There are three reasons for the fall of greenhouse gas. First, Efw facilities do not produce methane as landfill. Second, metal are recycled rather than being thrown out. Third, electricity produced by EfW facilities can replace those by coal, therefore reduce emission. Moreover, according to Canadian Resource Recovery Council, Efw can reduce greenhouse gas also because without EfW, it needs a long way to transport trash to the landfill. It also points out that EfW has been recognized by the international community as a remarkable way of reducing greenhouse gas. Therefore, in order to create a better environment, EfW should be progressed further in future.

URL:
http://www.resourcerecovery.ca/efw/avoids-greenhouse-gas-emissions/
                                                                                                                                                                                    
                                                                                                                                                                                   
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