There are huge deposits of oil, so much that every Pruner will be dead and there will still be oil around. All this **** about carbon is simply politico-scientific claptrap. Save money and avoid any carbon trading and prepare for the next ice age. Scrap the wind turbines and make aircraft engines more efficient and remember that shipping belches out more CO2 than all the
aircraft in the world and fly safe.
Without CO2 there would be no trees/vegetables/humans. It isn't a poison or pollutant.
Greens are not good for anyone.