Beans--from the dawn of civilization they have been cultivated. They are one of the world's most nutritious and versatile foods. These legumes, along with peas and lentils (a group of legumes also known as "pulses"), are a staple food in virtually every country. In addition to cooking dried beans, the plant's leaves are eaten as green vegetables in some places, as are the immature pods. Fresh beans are removed from the pods and eaten, and beans dried...