Mark Bittman says you can start by changing what you eat.

In his book, Food Matters, The New York Times food columnist writes about the environmental impact of industrial farming — and how individuals can make a difference by cutting down on the amount of animal products they consume.

Just in time for Earth Day, April 22, European scientists released a groundbreaking report linking meat consumption to nitrogen pollution. Nitrogen pollution? What on earth is nitrogen pollution?
Nitrogen is commonly used to fertilize crops. Between 70 and 80 percent of agricultural greenhouse gas emissions, including nitrous oxide, comes from the production and use of nitrogen fertilizers, which cause nitrogen pollution.