An interesting look at climate change science. The author of this blog from the Union of Concerned Scientists argues that the film’s premise is based on badly flawed — and almost unanimously rejected — interpretations of science.
According to the film Cowspiracy, the major source of global warming pollution isn’t fossil fuels like coal, oil, and natural gas, as the world’s scientists are telling us. No, it’s animal agriculture—not just eating cows, but all other kinds of meat, and eggs and milk and fish too. So the principal solution to global warming isn’t renewable energy. It’s for everyone to become a vegan. Central to Cowspiracy’s conspiracy theory is the supposed “fact” that a 2009 study found that 51% of all greenhouse gases are produced by animal agriculture. Two departures from the scientific consensus—counting the non-additional CO2 respired by livestock, and weighting the methane that ruminant animals emit nearly three times as heavily as most scientists do—account for the biggest differences between the scientific consensus of about 15% of emissions and the 51% figure that Cowspiracy uses.