Obesity as a cause of global warming?

That pesky obesity thing. First it forced Disneyland to increase the sizes of its theme-park costumes, and hospitals to buy larger hoists and beds. Now, in a letter published Friday in the medical journal Lancet, two scientists write that obese people are disproportionately responsible for high food prices and greenhouse gas emissions because they consume 18% more food energy due to their greater body mass -- and require increased quantities of fuel to transport themselves and the food they eat.