*edit*
It looks like the numbers are $100 billion a year from all developed nations. Not quite as bad as $100b/yr from America alone. I think this is ludicrous either way as for $100 billion a year you could invest that money in more efficient tech and solve most of the problems. Heck, at $100 billion a year, you could make 100% of energy from nuclear or other clean sources.
Back from the dead, I'm afraid.







