Composting, the largest material in U.S. landfills, diverts organics, reduces methane emissions, and returns nutrients to soil. This explainer outlines the benefits of composting to manage food waste and organic waste, reducing methane emissions from landfill through oxygen-rich decomposition. It also explains the balance of nitrogen-rich greens and carbon-rich browns, proper moisture, and the three heat phases of microbial activity. The video also provides practical steps for starting or supporting local composting efforts.