Food waste makes up nearly a quarter of what Americans send to landfills, where it produces methane, a potent greenhouse gas. Composting offers a simple, effective alternative that converts scraps into valuable fertilizer for gardens and farms, helping reduce emissions and enrich soil health.
- Food waste accounts for 24% of landfill material and drives methane emissions.
- Composting uses oxygen to decompose scraps, avoiding harmful gases.
- Finished compost enriches soil, retains moisture, and sequesters carbon.
What happened
Food waste is the single largest material Americans throw away into landfills, making up about 24 percent of landfill contents according to the EPA. When buried without oxygen, food scraps rapidly rot and release methane, a greenhouse gas much more powerful than carbon dioxide in the short term. Yard trimmings, wood, and paper add to the organic waste crowding landfills, pushing organic materials to over half of landfill volume.
The EPA’s studies reveal that landfills are a significant source of human-caused methane emissions, with food waste responsible for over half of those emissions. As food decomposes quickly—half the carbon breaking down within 3.6 years—much methane escapes before landfill methane-capture systems can work. Composting offers a practical answer to reduce these emissions by keeping organic waste out of landfills from the start.
Why it feels good
Composting is a controlled, aerobic process where microorganisms break down organic material using oxygen, preventing methane formation. This results in a stable, nutrient-rich soil amendment known as humus, which supports healthier plant growth and reduces the need for chemical fertilizers. Proper management of compost piles—including balancing green and brown materials and turning the pile to maintain temperature—ensures efficient decomposition without unpleasant odors.
Beyond reducing landfill waste and methane, composting improves soil's ability to hold moisture during drought, prevents erosion, and sequesters carbon, offering lasting environmental benefits. Whether for household kitchens or small farms, composting turns scraps into garden gold, supporting vibrant ecosystems and reducing your carbon footprint.
What to enjoy or watch next
Starting your own compost pile can be a rewarding project that benefits both your garden and the planet. Focus on maintaining a healthy mix of nitrogen-rich green waste, like fruit and vegetable scraps, with carbon-rich brown matter such as dried leaves and paper. Regularly turning the pile helps keep it aerobic, encouraging beneficial microbes and avoiding unpleasant odors.
For those interested in expanding their composting impact, community compost programs or small-scale farm options can be explored. Watching the natural transformation of everyday waste into rich soil enhancer is both educational and satisfying—a delightful way to contribute to a greener future while nurturing your own plants.