Three Pillars of a Food Revolution

A few years ago, I stumbled on a United Nations study that transformed how I think about the climate crisis. In the report, researchers pegged greenhouse gases from the livestock sector at 18 percent of total global emissions. Combine this with other aspects of our food chain — from agricultural chemical production to agribusiness driven deforestation to food waste rotting in landfills — and food and agriculture sector is responsible for nearly one third of the planet’s manmade emissions. Move over Hummer; it’s time to say hello to the hamburger.

It doesn’t take high-level math to realize if we’re serious about averting the climate crisis, we need to add the food chain to our conversation. (Of course, we should be talking about agriculture’s impact on the environment for a host of other reasons, too. Agriculture is the world’s single largest user of land and water, using up 70 percent of the world’s freshwater resources every year. Agriculture is also responsible for widespread air and water pollution and agricultural chemical runoff that causes aquatic dead zones around the world. At last count, there are more than 400, including one in the Gulf of Mexico that swells every year to a size three times larger than the BP oil spill.