
Rajenda Pachauri, the Nobel laureate and head of the UN intergovernmental panel on climate change, has stated that changing what's on your plate is a more important issue than reducing car journeys. And his colleague Yvo de Boer, head of the UN agency that hosts international talks on climate change, has said that one of the best solutions to the planet's most burning problem would be "for us all to become vegetarians".
The pair have authoritative studies on their side. In 2006, another UN body, the Food and Agriculture Organisation, stated that 18% of all greenhouse gas emissions stemmed from livestock rearing. Not only does meat production contribute more than transport to climate change, the methane released by flatulent cows has 23 times more potential impact on the earth's atmosphere than carbon dioxide, the FAO estimated.
Jeremy Rifkin, the American economist and an adviser to several EU institutions, has given a similarly compelling reason why meat consumption must be cut. "People go hungry because much of arable land is used to grow grain for animals instead of food for people," he has said, pointing out that during its 1984 famine, Ethiopia was growing linseed cake and rapeseed meal for European livestock while its own people were dying of hunger.

