Interesting stuff coming out of Rothamstead, once land has reached it's maximum carbon content , grassland with good organic soil content ,then that's your lot, also they have worked out that the Nitrous oxide levels emitted from trash left with mintil (aprox 10x more damaging than CO2) is pretty well equal to CO2 emissions from ploughing etc. actually we have to give up flying and driving madley around like headless chickens , but that's not nearly such a good suggestion for the media to shout.