Guardian: Here’s an intriguing story: a link between obesity and climate change. A paper in the International Journal of Epidemiology by Phil Edwards and Ian Roberts shows that heavier populations increase emissions for two reasons: they consume more food and they require more energy to transport. This became “Fatties cause global warming” on the front page of the Sun today. I’m sure it’s true: the more we consume of anything, the greater the impact will be. But it’s not clear …