With which instrument do you cause more greenhouse-gas emissions: your car key or your fork? It’s a question asked in an advertising campaign by the Humane Society, which, along with other big animal-rights groups, is striving to open consumers’ eyes to an oft-overlooked connection: the climatic impact of eating meat. Bolstered by a recent United Nations report stating that the livestock business spews more GHGs than all forms of transportation combined, animal-rights groups say greens aren’t stressing the point enough. “Environmentalists are still pointing their fingers at Hummers and S.U.V.’s when they should be pointing at the dinner plate,” says a campaigner for PETA. “You just cannot be a meat-eating environmentalist.”
