After reading this it makes you think that maybe we are toast, perhaps we are trapped on a climate change rollercoaster that cant be stopped short of mass death of our species?
Food production is now so energy-intensive that more carbon is emitted providing a person with enough calories to walk to the shops than a car would emit over the same distance. The climate could benefit if people avoided exercise, ate less and became couch potatoes. Provided, of course, they remembered to switch off the TV rather than leaving it on standby.
What if, instead of beef, the walker drank a glass of milk? The average person would need to drink 420ml – three quarters of a pint – to recover the calories used in the walk. Modern dairy farming emits the equivalent of 1.2kg of CO2 to produce the milk, still more pollution than the car journey.
So it seems we should be instructed to drive more, eat less, cross our fingers until they revolutionise our farming methods!