Word: sun
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Dates: during 1970-1979
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...peasant growers of the Sierra Madre soon developed a new strategy to combat the herbicides. Paraquat kills in the sun. Its chemistry requires about three days of ultraviolet rays in order to destroy the plants on which it has been sprayed. To save the marijuana, peasants began to rush out and harvest the plants minutes after the helicopters were gone; they put their plants in bags to shield them from the sun. Even though they had been sprayed, the leaves of plants so shielded did not yellow. The plants appeared normal, so the peasants could sell them as if they...
...Egyptians, who recorded this prayer to their Sun God nearly 3,400 years ago, called him Ra; the Sumerians named him Utu; the Incas, Inti; and the Greeks, Helios or Apollo. Mankind has always worshiped the sun as the bringer of life and warmth, and still does so today. The idols are gone, but a growing group of scientists and environmentally concerned solar enthusiasts dreams of discovering an easy, efficient and economical method of harnessing the sun's clean energy to supplement increasingly costly and chancy fuels like oil, coal and natural...
...Wednesday, May 3, solar activists across the nation will begin to celebrate "Sun Day" to mark what some of them call the "dawn of the solar age." Their aim is to convince more politicians, financiers and manufacturers that sun power has a glowing future. The celebrations, financed by organizations as diverse as the Rockefeller Brothers Fund, the Department of Energy and the United Auto Workers, will begin with songs of praise to the rising sun in Maine and include talks and solar-power demonstrations in just about every state. In a speech at Golden, Colo., on Sun Day, President Carter...
...idea of using the sun's energy is far from new. Archimedes is said to have focused the sun's rays with mirrors to set on fire an invading Roman fleet in 212 B.C. Over the past century, experimental solar units have been used to power everything from a printing press in France to a water-distilling plant in Chile. With today's advanced technology, the potential is enormous. The sunlight falling on earth could theoretically provide 100,000 times the total energy output of all existing power stations. At present there are three forms of active...
Rooftop panels or collectors made of glass and copper pipe. Liquids in the pipes absorb the sun's heat, and are then circulated to a storage tank that feeds heat to household living areas and water supplies...