Word: watered
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Dates: during 1980-1989
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There are things people can do if the well runs dry. Several communities located near the sea have built desalinization plants. Denver, meanwhile, has pioneered the unsavory concept of turning sewer water into drinking water. In 1985 the city opened an experimental plant that produces 1 million gal. a day of high-quality H2O from treated effluent...
...year, are planting a "green Great Wall" of grasses, shrubs and trees 4,350 miles across their northern region. In Peru archaeologists have revived a pre- Columbian agricultural system that involves dividing fields into patterns of alternating canals and ridges. The canals ensure a steady supply of water, and the nitrogen-rich sediment that gathers on their floors provides fertilizer for the crops...
...other techniques, have made plants bloom on land that has been barren for millenniums. Portions of the arid Negev, an area once written off as largely uncultivable, today grow fruit, flowers and winter vegetables eagerly sought by European markets. Through a process known as "fertigation" -- dripping precise quantities of water and nutrients at the base of individual plants -- crops can be grown in almost any soil, even with brackish water...
...make cowpeas more tolerant to heat. Other scientists are using genetic engineering to transfer genes from bacteria that act like natural insecticides. But though they have tried, scientists have not yet been able to develop farm crops that are drought resistant. Says Hall: "You can't grow plants without water...
...folks in Osage save energy the old-fashioned way: they plug leaky windows, insulate walls and ceilings, replace inefficient furnaces and wrap hot-water heaters in blanket insulation. Since 1974, the community has cut its natural-gas consumption some 45% and reduced its annual growth in electricity demand by more than half, to less than 3% a year...