世界绿色和平组织调查表明:全世界每年约产生100亿吨垃圾,其中2/3垃圾产生于发达国家。我国城市的生活垃圾的露天堆放总量已达1.46亿吨,有2/3的城市陷入垃圾包围之中。据环境专家对垃圾中的各种类型废弃物的解体时间进行过推算:玻璃实际上在任何时候都不会分解,塑料瓶则需450年,易拉罐需200～250年,塑料袋100～200年,纸屑需15天。所以我们随意 World Greenpeace survey shows that about 10 billion tons of garbage are produced each year in the world, of which two-thirds are produced in developed countries. The total amount of open-air storage of domestic waste in cities in China has reached 146 million tons, and two-thirds of the cities are trapped in garbage. According to environmental experts, the disintegration time of various types of waste in garbage has been calculated: glass will not be decomposed at any time, plastic bottles will take 450 years, cans will take 200 to 250 years, and plastic bags will be 100 to 200 years. Confetti takes 15 days. So we are free