Because takeout and delivery meals in China include single-use chopsticks, which are made from wood or bamboo, the growth in food delivery also has an impact on China's forests. China produces about 80 billion pairs of single-use chopsticks yearly, the equivalent of 20 million 20-year-old trees. About 45 percent are made from trees – mainly cottonwood, birch, and spruce, the remainder being made from bamboo. Japan uses about 24 billion pairs of these disposables per year, and globally about 80 billion pairs are thrown away by an estimated 1.4 billion people. Reusable chopsticks in restaurants have a lifespan of 130 meals. In Japan, with disposable ones costing about 2 cents and reusable ones costing typically $1.17, the reusables better the $2.60 breakeven cost. Campaigns in several countries to reduce this waste are beginning to have some effect.