Primary Sources

Primary Sources: "The Bovine Menace

Forget SUVs and tractor-trailers—the world’s livestock play a larger role in global warming than all of our planes, trains, and automobiles combined, according to a report from the Livestock, Environment and Development Initiative (LEAD), an organization that promotes “ecologically sustainable livestock production systems.” Between the deforestation that’s necessary to create grazing lands, the fossil fuels required to manufacture fertilizer for the crops that feed the world’s growing livestock population, and the gases released by animal manure, livestock are responsible for 18 percent of greenhouse-gas emissions worldwide. The good news: There are ways to reduce these emissions, including more efficient feed production, improved soil conservation, and a better diet for all those gassy cows. Given that the global production of meat and milk is on track to double by 2050, livestock’s current environmental impact would need to be cut in half just to stay within the present level of damage to the global ecosystem."