As Megan correctly points out "Over population is the real issue"...
Many will remember the East African famine of 1983-84 that sparked the "Live Aid" charity and the relief efforts it produced. Ethiopia, for example, had a population then of 39,000,000 of which upwards of 6,000,000 were affected. Nearly 1,000,000 died according estimates.
We are now 35 years on and population growth has continued. Any guesses as to the current estimate?
108,700,000 with 2.4% growth. That's 2,500,000 births per year.
Add in India and China and you can see why some of us are unconcerned about our local small scale efforts to reduce emissions and look to the bigger picture.