Two terawatts of R.E.: possible? on time?

[Turtuga Blanku]

it starts a bit strange, but comes to the point quickly:

http://blog.wired.com/sterling/2009/01/renewistan.html

What would it take to level off the carbon dioxide in the atmosphere at 450 parts per million (ppm)? That level supposedly would keep global warming just barely manageable at an increase of 2 degrees Celsius. There still would be massive loss of species, 100 million climate refugees, and other major stresses. The carbon dioxide level right now is 385 ppm, rising fast. Before industrialization it was 296 ppm. America's leading climatologist, James Hanson, says we must lower the carbon dioxide level to 350 ppm if we want to keep the world we evolved in.

[Marc]

Wow, that's massive. - is it going to happen? - I can't see it, I don't think more than 10% of people will see it as important enough, soon enough.
So it looks like we're all doomed, or most of us anyway ......