Word: carbone
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People also put carbon into the air when they heat homes with oil or natural gas, or use electricity that comes from burning fossil fuels. Household conservation tips should be familiar: close off unused rooms, seal up cracks and openings, and insulate roofs. Look at the energy-efficiency rating when buying appliances. And one more idea that few people know about: replace ordinary incandescent light bulbs with "compact-fluorescent" models sold by major light-bulb manufacturers. They can give off the light of a 60-watt bulb while using only 15 watts of electricity. These fluorescent bulbs cost at least...
Such precedents are not encouraging if the U.S. is to grapple with global warming, the climate change that might follow from overloading the atmosphere with gases like carbon dioxide. To date the Administration has been slow to react to the greenhouse threat because scientists are still debating how serious the problem is and because taking strong steps against it could cause severe economic dislocations. The U.N. is sponsoring a major study that could provide the basis for a coordinated international approach to global warming. American leadership is critical to this effort, just as it was to the Montreal Protocol...
...least 60 cents per gal., from the current 9 cents per gal., over the next four years. At the same time, the Government could begin setting up a program to tax the use of all fossil fuels. The size of the tax should vary according to how much carbon is released into the atmosphere when a particular fuel is burned. That would encourage a shift in consumption patterns away from high-pollution fuels like coal to cleaner ones like natural...
...proclaimed himself the environmentalist candidate in an outdoor campaign speech on Aug. 31, 1988, he had to mop his brow several times as he spoke. Last year was the hottest ever recorded, spurring a debate among scientists as to whether the mercury was registering proof of the "greenhouse effect." Carbon dioxide and other chemicals are spewed into the atmosphere by the burning of fossil fuels like coal and gasoline; the gases trap radiation that has come from the sun and that would otherwise escape into space. The result is global warming: over time, sea levels will rise, droughts and floods...
Working with a bacterium and a pond-dwelling protozoan, Altman, 50, and Cech, 41, independently discovered that RNA can act as an enzyme, a molecule that accelerates chemical reactions a millionfold or more and makes it possible for life to exist. Plants, for example, depend on enzymes to convert carbon dioxide in the air to sugar and starch. An enzyme in human saliva helps transform starch into glucose, the body's energy source. Until RNA enzymes were identified, all enzymes were thought to be proteins...