Every day, a huge mass of products flows into the market to satisfy the changing and often artificially induced needs of millions of consumers; simultaneously, a huge quantity of objects is eliminated in order to make room for new and occasionally more performing products.
It is possible to have a clear perception of this serious phenomenon looking at the pictures of a few patches of floating garbage found in the middle of the oceans. In the north Pacific, for example, there is one of the now famous plastic islands, the "Pacific Trash Vortex", a concentration of waste so large (even bigger than France) that an environmental association defiantly asked that it be recognized as a State.
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