Animal agriculture is a major force influencing climate change, according to environmental experts. Curbing this kind of environmental disaster is a tough order, but there’s one simple thing you can do to help: Eat less meat.

On our third episode of “Sustainable Self,” a series about how your everyday choices can significantly impact the earth, we explain how going meatless for just one meal a week can help save water and cut down on greenhouse gas emissions. Making that one switch can even help reduce global hunger because much of our grain production goes directly to feeding livestock.

Talk about a win-win situation.

The Huffington Post is partnering with to launch the Sustainable Self movement page, where viewers can create and join petitions based on the issues highlighted in each episode. Visit change.org/sustainableself to become part of the movement!