freediver wrote on Sep 29^th, 2010 at 9:41am:


It could be more expensive in more ways than one.  At the moment, forests are generally a sink for atmospheric carbon dioxide.  After a certain stage in warming however, the forests start to become net emitters of carbon.

If we just rely on tree planting, it's going to solve nothing. Right now, the forests are effective. 30 years from now, it could be a whole new ballgame.

We need to be working on renewable energy.