A little while back we were told that in certain conditions temperate forests don't soak up CO2 at all but can end up returning it to the atmosphere. Now it seems that in a way yet to be understood, forests release methane which is a more powerful greenhouse effect driver though short lived and not being emitted in such quantities that it might not still make sense to continue tree planting in the tropics at any rate to mitigate CO2 by-production. However it is an illustration that most of what we do for climat change is a cost-benefit analysis in the end.
Guardian Unlimited | Science | Global warming: blame the forests
Filed in: science, environment, global_warming, trees, methane
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