每周吃一天素.据在纽约大学的科学家说,如果全人类有一餐不吃鸡,二氧化碳的减排量将相当于在美国路上的汽车少了多过50万辆.
原文如下：
Go vegetarian one day a week.According to the scientists at New York University,if the whole population skips one meal of chicken,the amount of carbon dioxide would be the same amount if more than half a million cars were taken of roads in the US.