Please read this article at CleanTechnica - a great source for a future beyond fossil fuels and carbon economy.
"Compared to plant protein, raising animal protein takes up to one hundred times more water, eleven times more fossil fuels, and five times more land. And the growth of lobbying in relation to the cost of running a national political campaign has ushered in an era in which legislation has weakened existing laws about cruelty to farm animals, food defamation, undercover investigations, food injury lawsuits, and ecoterrorism. Our legislators need the animal agriculture industry’s cash to stay in office, and the trade-off that props up the animal as food industry hurts U.S. citizens."