Most Americans take food for granted. Even the poorest fifth of households in the United States spend only 16 percent of their budget on food. In many other countries, it is less of a given. Nigerian families spend 73 percent of their budgets to eat, Vietnamese 65 percent, Indonesians half. They are in trouble. Last year, the food import bill of developing countries rose by 25 percen (共 3755 字) [阅读本文] >>