A convenient omission in the debate on carbon dioxide emission is that of forestry burnoff. Do a google search on "forestry burnoff causing drought", you may be surprised. Figures I've seen estimate carbon dioxide emission from forestry activity account for between 17 and 40% of global emissions and the argument that by planting more trees they are benefiting the environment simply doesn't stack up. Nasa's own scientists have suggested a link between drought in the Amazon basin and burnoff in that area.
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