across most of North America, yard and food waste make up over a quarter of all the ordinary garbage we throw away. That’s 25% by weight. In the U.S., that 25% is almost equally divided between yard waste (32.6 million tons, or 12.8% of all MSW) and food scraps (31.7 million tons, or 12.5%). And then there’s all the other organic stuff that could be composted. Then there’s paper, which at 83 million tons accounts for another 30% of municipal solid waste. The latest year for which figures are available, over 64% of the yard waste we throw away was recovered and composted, as was 54.5% of the paper and cardboard. Only 2.6% of food waste reached a compost heap.