What would happen if the world suddenly went vegetarian

No matter how much their carnivorous friends might deny it, vegetarians have a point: cutting out meat delivers multiple benefits. And the more who make the switch, the more those perks would manifest on a global scale. But if everyone became a committed vegetarian, there would be serious drawbacks for millions, if not billions, of people. "It's a tale of two worlds, really," says Andrew Jarvis of Colombia's International Centre for Tropical Agriculture. "In developed countries, vegetarianism would bring all sorts of environmental and health benefits. But in developing countries there would be negative effects in terms of poverty." More here