peppers. The valley floor served to grow bounties of alfalfa, artichokes, avocados, beans, beets, cabbage, carrots, corn, cotton, cucumbers, dandelions (salad greens), eggplant, figs, grains (i.e. barley, oats, rye and wheat; plus rice fields kept wet or moist in the Salton Sea area), hops, kohlrabi, lettuce, mangoes, nectarines and peaches, persimmons, plums and prunes, pomegranate, potatoes, radishes, spinach, strawberries, sugar cane, tomatoes, a variety of herbs and spices, and other vegetable crops. The Coachella grapefruit originated in the region. The city of Coachella is the primary shipping point for agricultural goods. Domesticated grasses, flowers and trees are widely grown for warm-weather or desert climates, and sold for use in golf courses and landscape. Only 10 percent of the Coachella Valley residents were born/raised in the area, according to the 2000 census, a much lower percentage than found in most parts of the U.S. Agriculture is a founding block of the majority of the residents whose parents and grandparents came to the area as farmers and laborers transformed the eastern parts of the valley from a hot sandy desert into a fertile place with a year-round growing season. The Coachella Valley's agricultural development is due to irrigation: water was drawn from an underground aquifer created when the valley was under a fresh water lake in the last ice age (over 10,000 years ago); and from the Coachella Canal, a concrete-lined aqueduct built between 1938 and 1948 as a branch of the All-American Canal, which brings water from the Colorado River to the Valley. The Colorado River Aqueduct, which provides drinking water to Los Angeles and San Diego, crosses the northeast end of the Valley along the base of the Little San Bernardino Mountains (the Joshua Tree National Park). Recent growth of fish farming or aquaculture in Mecca near the Salton Sea brings new promise to the local economy, especially to efforts to restore the ailing ecology of the large saltwater lake. Wind power The valley's northwest entrance from the San Bernardino-Riverside along Interstate 10 is known as the San Gorgonio Pass and is the second windiest place in the country. Cool coastal air is forced through the pass and mixes with the hot desert air, making the San Gorgonio Pass one of only three ideal places in California for steady, wind-generated electricity. At the San Gorgonio Pass Wind Farm, thousands of huge wind turbines spread across the desert and hills on