<div class='quotetop'>QUOTE </div><div class='quotemain'>As one of the world's biggest beef producers, Argentina has more than 55 million cows grazing in its famed Pampas grasslands. Guillermo Berra, a researcher at the National Institute of Agricultural Technology, said every cow produces between 800 to 1,000 liters of emissions every day. Methane, which is also released from landfills, coal mines and leaking gas pipes, is 23 times more effective at trapping heat in the atmosphere than carbon dioxide.</div> Telegraph