Word: costs
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Dates: during 1970-1979
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...reach the marijuana and opium poppies hidden in the Mexican Sierra Madre. Then they had to hack up the crop with machetes and burn it. Starting in 1975, the U.S. made their work easier by providing blue and white helicopters (Bell 212s and 206s), purchased at a cost of about $21 million; some of the helicopters were used to spray herbicides from a few feet above the ground. Others served as gun ships, hovering above to shoot it out with the peasants who took up arms to defend their crop. The program was a great success. In 1977 about...
...cost to consumers will not, in any case, be cheap. Michigan Democrat John Dingell, a leading House negotiator on the committee, estimates that homeowners who use natural gas could well find their heating bills jumping by $40 to $50 annually...
...immediate problems, so many large companies are moving into solar power with an eye to the future that Congress is already worried about antitrust problems. Most of the firms are looking for better and less costly ways of collecting the sun's energy and storing it for rainy days or nighttime use, with one ultimate aim of exporting their technology to less developed countries. General Electric recently developed a tank that uses common salt to store for long periods heat collected by solar panels. Along with Owens-Illinois, G.E. is also working on advanced vacuum-tube rooftop solar collectors...
...capable of providing 75% to 80% of a house's heat. In Britain, Patscenter International, a well-respected research group, has discovered a still secret way of making photovoltaic panels at a fraction of the current price; panels to power a small family house, it says, would cost about...
...houses as far apart as Maine and Hawaii, rooftop solar panels are sprouting as the ultimate in status symbols. The units are often unattractive (one California city now insists that they somehow be screened), and can cost from $7,000 to $12,000 to heat an eight-room house. Solar is also being used by industry. Anheuser-Busch employs sun heat for some beer pasteurization, Campbell's Soup to heat water to wash its cans, Tropicana to steam-process its orange juice. Solar energy provides heat or hot water or both in a visitors' center at Mount Rushmore...