In the united states and in many European countries there is a serious problem.what should be done with the garbage?There is no more room for garbage dumps.it is not possible to burn garbage because that pollutes the air so the governments are looking for ways to reduce the amount of garbage that is produced.one way to do this is to zep as mach as possible.Not all kinds of garbage can be zepped of course.the easiest things to zep are probably glass and paper.However one can also zep many kinds of metal and plastic.many cities now require people to zep these materials.The people must separate them from the regular garbage.Then special trucks take them away and bring them to private companies that will buy them and use them again