The Earth is not in danger, and we cannot tamper with Nature, we /are/ Nature.

The only thing that will ensure our children have a better, cleaner world is to make /less/ children. /Population/ is the biggest problem facing humanity, /nothing else matters/ in comparison. Use the pill, drive a Hummer.

[I know this leads to the question: What if only the stupid people breed like mad, won't be overrun with idiots? And the answer to that question is: That already happened.]