Because nitrous oxide [released by nitrate-fertilised soil] is 296 times stronger than CO₂ at global warming, and methane [cow farts] is about 23 times as potent as CO₂, the combined greenhouse effect of our livestock worldwide is greater than the sum total of all the cars, trains, busses, trucks, ships, airplanes and jets.
~ Thom Hartmann (born: 1951-05-07 age: 58) Threshold: The Crisis of Western Culture page 33

We have no choice but to reduce our consumption of meat, to use it more like a condiment, the way the Chinese do. The first step is to stop the astronomical agricultural subsidies on fodder and meat to let it gradually rise to its true market price. LetsActNow.org