Question about World pollution?

In the last two centuries West has developed to the peak and also contributed to severe global warming and envionmental pollution. This seems to the century for the east also. So imagine both east and west in this century both contributing to the threats like warming,pollution,ozone layer depletion and so and so.!!!!!!!!!!. Where is this heading to? Isnt it a serious concern? By When would we begin to see the impact directly