“What about cow farts?” I hear you ask. Actually, I didn’t hear and you probably weren’t asking that but yep, that’s right - we can’t leave out the massive impact of farming. The livestock we rear for meat emit more greenhouse gas than all the world’s transport! It is through their burps and belches that they emit most of these gases - up to 95% comes from the cow's mouth rather than its bottom! The greenhouse gas that livestock produce is called methane. Methane, together with other greenhouse gases like carbon dioxide contribute to global warming by acting like a blanket surrounding the whole planet, trapping the sun’s heat within the atmosphere and causing global temperatures to rise.