Since times immemorial the environment has not only sustained the biosphere on this planet but has shaped, modified and refined it into a highly versatile self-sustaining system of mil lions of life forms. In its turn the Biosphere has also modified the environment drastically. Among the millions of species which constitute the biosphere, man indeed is a marvellous product of organic evolution. He has been gifted with unique mental faculties and a pair of hands which handle spear, spade and tools. The biosphere without man took many hundred million years to produce the environment as it exists today, but in barely one million years of his existence man has caused such changes in its which threaten the very existence of healthy life on this planet.