This should shut the eco-tolerant veggie eaters up..All those who turn up their noses to look down on me as I chomp my way through a steak or a garnish-dripping burger.. can now shut the f**k up!. I'm doing my part to eliminate greenhouse gasses and make the world a better place.. " Farmed ruminant animals are thought to be responsible for up to a quarter of ' man-made' methane emissions worldwide. Bovine methane is a greenhouse gas 20 times more powerful than carbon dioxide and cows pump out more planet-destroying gas a day than a Land Rover Freelander driving 64 kilometres. Contrary to common belief, most gas emerging from bossy comes out the front rather than the back". Burping Cows Kill the Planet. Eat More Beef!!