How many couples will have more than one child? How many people eat meat or fish every day? How many people drive their car to the corner store less than a mile away? How many people buy huge SUVs and trucks as a status symbol when a smaller car is all they need?
Governments won't solve this issue. We the consumers have to solve it, the problem is that nobody gives a fuck.
I have tried to reduce my carbon footprint to the minimum and guess what? It won't matter because by the time I have saved a few kilos of Co2 there's a douchebag with a hummer driving down the street sucking gasoline like there is no tomorrow!
And to top it off everybody thinks that the world's economy can continue to grow without any limits. I believe that as a species we are simply delusional.