Word: warms
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Dates: during 1980-1989
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...place. Without a heat-trapping blanket of naturally occurring CO2, the planet would have an average surface temperature of only 0 degrees F instead of 59 degrees F. Reason: like the glass panes of a greenhouse, CO2 molecules are transparent to visible light, allowing the sun's rays to warm the earth's surface. But when the surface gives off its excess heat, it does so not with visible light but with infrared radiation. And since CO2 absorbs infrared rays, some of the excess heat stays in the atmosphere rather than escaping into space. How much heat is retained depends...
...confirmed that this is more than just theory. By drilling deep into Antarctic and Arctic ice, scientists have been able to measure the amount of CO2 in air bubbles trapped in ancient layers of snow. They have also looked at fossilized plant tissues for clues as to how warm the air was during the same period. The conclusion: CO2 levels and global temperatures have risen and fallen together, over tens of thousands of years. And there is evidence from space: Mars, which has little CO2 in its atmosphere, has a surface temperature that reaches -24 degrees F at best, while...
...agreement elicited warm praise from Cuba, Angola and the U.S., which sees the protocol as the fruit of nearly eight years of artful, arduous negotiation by Crocker -- helped along toward the end by the new spirit of cooperation between Washington and Moscow. U.S. officials credit the Soviets for employing "cajolery and arm-twisting" that made the Cubans and Angolans more flexible, particularly during the crucial round of talks at which a withdrawal timetable was worked out. SWAPO welcomed the accord but expressed doubts about South African intentions. The only guarantee of Pretoria's keeping its word after signing the agreement...
Reagan spent two full hours getting ready for the finale. Up in his private quarters, he sipped warm ginger ale to clear his throat, calm a stomach upset from the night before. "Remember," cautioned Nancy, "this is your last one." Reagan got an impish look. "Oh, I don't know about that." Most other people think they...
...Soviets are relying more on athletes, dancers and diplomats to advance their interests and less on soldiers, KGB infiltrators and guerrillas. Insofar as Gorbachev's mission to New York is meant to persuade the world -- and George Bush -- that the change is real and will continue, he deserves the warm welcome he is likely...