"To-day's neglected decisions become tomorrow's crisis". This well known expression sums up in a few words the fact that environmentalists, scientists, farmers and mankind as a whole have been warning governments throughout the world for the past fifty years about the need to give thought to the environment as a consequence of the problems involved with too many factories bellowing smoke, too many cars, trucks and buses polluting the air with the use of fossil fuels (petrol and diesel), too much urbanization and a population growth which has got out of control.