Abstract
Recentry, the problem of refuse disposal has become very severe as the environment pollution is increasing remarkably.
We don't think much of throwing away kitchen refuse or other even poisonous things into trash cans or sewages facilities. Natural resourses, which we are daily making use of, are limited and not everlasting. We ought to save them and recycle them as much as possible.
From this point of view, may I here introduce some exampies which are actually being done in West Germany?
