Millets are a group of highly variable small-seeded grasses, widely grown around the world as cereal crops or grains for fodder and human food. There are about 6,000 varieties of millet throughout the world, and since they are not fussy about soil and water, they are a major source of energy and protein for more than a billion people in arid and semi-arid regions. Unlike our over-cultivated wheat-rice-corn which need a whole lot more pampering to survive.