In my country(India) this is already a very big problem. Apart from the impact on insects, pests etc. Its also a big problem for Humans ourselves. There have been villages full of people with cancer. In fact there are even trains going from villages to cities, name like cancer trains.

Apparently this all had to be done, to tackle India's growing population problem.

One more thing that no body is talking about in this case. Over population of earth, and effects it's causing on resources we humans consume. That's beyond all that Carbon we venting it in the air.

How long before we see some big problems(famines, food shortages) showing up?