I'm not sure if this has been brought up yet, but I feel like it needs to be mentioned in any discussion about climate change. If you want to save the environment, reduce your carbon footprint, decrease deforestation, etc, etc, the answer is simple. Quit having kids. I always chuckle when someone wants to preach about climate change but they have three kids at home. Overpopulation is the number one threat to the environment but nobody wants to talk about it. 10 billion people driving Prius's will destroy the environment faster than 1 billion people driving Hummers.