Olympian Arielle Gold laments the threat to winter sports posed by global warming ("Climate change threatens Winter Olympics," Opinion, Feb. 18), but expecting politicians "to take action on climate change" is a half-pipe dream. Diet changes could do more.
Consider that Food and Agriculture Organization scientists found that "livestock are responsible for 18 percent of greenhouse gas emissions" more than transportation. A University of Chicago study calculated that a vegan diet reduces more greenhouse gas emissions than switching from an SUV to a Prius.
Consider these facts: Livestock use 30 percent of the earth's land surface with 70 percent of Amazon forests now turned over to grazing. Livestock production affects 1.9 billion U.S. acres (excluding Alaska), 43 percent of which is public land. More than 250 million acres of public land grow crops to feed livestock; another 306 million acres are grazed (the equivalent of 14 Eastern Seaboard states plus Missouri).