Walking to the shop is worse for your carbon footprint than driving the same distance in the car.

This is the truth about how our actions affect the environment according to Chris Goodall, author of How to Live a Low-Carbon Life.

He says: “Driving a typical UK car for three miles adds about 0.9kg of CO2 to the atmosphere. If you walked instead it would use 180 calories. You’d need about 100g of beef to replace those calories, resulting in 3.6kg of emissions, or four times as much as driving.”

“The troubling fact is that taking a lot of exercise and then eating a bit more food is not good for the global atmosphere. Eating less and driving to save energy would be better.”

Interesting theory, which is sure to cause some green heads to turn red with anger.