People on earth, in billions: 6.2
Cattle on earth, in billions: 1.3
Methane, in tons, produced by the world's cattle every year: 100,000,000
Average daily subsidy, in dollars, paid to a cow in the European Union: 2.50
Percentage of the world's population living on less than $2 per day: 50
Sources: Ehrlich & Ehrlich, One With Nineveh; Science Friday; Wuerthner, Welfare Ranching
