Is it 10%? 90%? Would be good to know. It would be good to know, and it would be very good to know whilst the effect is still reversible. It would be a great

Is it 10%? 90%? Would be good to know. It would be good to know, and it would be very good to know whilst the effect is still reversible. It would be a great shame to discover that our fears about man-made climate change were correct, but it's too late for any changes to have a meaningful effect.