All animals produce some methane through digestive processes, but until now I had no idea of the absolutely staggering difference between people and cows. The BBC has published a terrific illustration of methane production per person or animal. Humans produce just 0.12 kilograms of methane each year. Pigs do about 1.5 kilos. A sheep will do eight kilos. And western cattle produce an astonishing 120 kilograms. In other words, just one cow produces as much methane as a thousand people.
If you click through the link, you’ll see a nice illustration of these numbers, and you’ll also have the chance to listen to an excellent BBC interview with climate change expert Lord Stern. (Thanks: Shell & Bate.) Link.