Peanut butter production creates lower levels of CO2 compared to meat, eggs and cheese.12 Plus, peanuts don’t require as much water to grow as other nuts.13,14 They also replenish nitrogen in the soil they grow, which makes it a great choice for crop rotation. And, according to the U.S. Sustainability Alliance, even the hulls, husks and oil nd a purpose as animal feed and biodiesel.