So in environmental news today, scientists have developed an artificial tree that is 1000 times more efficient than natural trees at removing CO2 from our atmosphere.
The cost is quite high at $20,000/apiece but I imagine environmentalists would think the price worth it. In addition, since carbon dioxide produced in Beijing can be removed in Chile, it doesn't matter what countries decide to purchase these trees to help our atmosphere.
http://www.bbc.com/future/story/2012...an-the-skies/2