A growing number of organic consumers, natural health advocates and climate hawks are taking a more comprehensive look at the fundamental causes of global warming. And its led them to this sobering conclusion: our modern energy-, chemical- and genetically modified organism (GMO)-intensive industrial food and farming systems are the major cause of man-made global warming.
How did they reach this conclusion? First, by taking a more inclusive look at the scientific data on greenhouse gas (GHG) emissions—not just carbon dioxide (CO2), but also methane and nitrous oxide. Next, by doing a full accounting of the fossil fuel consumption and emissions of the entire industrial food and farming cycle, including inputs, equipment, production, processing, distribution, heating, cooling and waste. And finally, by factoring in the indirect impacts of contemporary agriculture, which include deforestation and wetlands destruction.
The science behind global warming is complex. Without question, coal plants, tar sands and natural gas fracking have contributed heavily to GHG pollution, the major cause of global warming. We must unite to shut down these industries. Similarly, consumer overconsumption of fossil fuels represents another big piece of the climate-crisis equation. We absolutely must rethink, retrofit and/or redesign our gas-guzzling cars and our energy-inefficient buildings, if we want to reduce fossil fuel use by 90 percent over the next few decades.
But we also must address the environmental impact of factory farming.
Today, nearly 65 billion animals worldwide, including cows, chickens and pigs, are crammed into CAFOs. These animals are literally imprisoned and tortured in unhealthy, unsanitary and unconscionably cruel conditions. Sickness is the norm for animals who are confined rather than pastured, and who eat GMO corn and soybeans, rather than grass and forage as nature intended. To prevent the inevitable spread of disease from stress, overcrowding and lack of vitamin D, animals are fed a steady diet of antibiotics. Those antibiotics pose a direct threat to the environment when they run off into our lakes, rivers, aquifers and drinking water.
CAFOs contribute directly to global warming by releasing vast amounts of greenhouse gases into the atmosphere—more than the entire global transportation industry. The air at some factory farm test sites in the U.S. is dirtier than in America’s most polluted cities, according to the . According to a 2006 report by the Food and Agriculture Organization of the United Nations (FAO), animal agriculture is responsible for 18 percent of all human-induced greenhouse gas emissions, including 37 percent of methane emissions and 65 percent of nitrous oxide emissions. The methane releases from billions of imprisoned animals on factory farms are 70 times more damaging per ton to the earth’s atmosphere than CO2.