Word: scientists
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Dates: during 1990-1999
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...NASA scientists have another explanation. In a newly published report they note that the Yucatan rock around Chicxulub contains abundant amounts of sulfur. The blast must have vaporized the sulfur, they say, and spewed more than 100 billion tons of it into the atmosphere, where it mixed with moisture to form tiny drops of sulfuric acid. These drops created a barrier that could have reflected enough sunlight back into space to drop temperatures to near freezing, and could have remained airborne for decades. "It could have been up to a century," says Kevin Baines, an atmostpheric scientist at NASA...
...there was Earth, barely discernible against the background of stars, an image that inspired the title of The Pale Blue Dot (Random House; 429 pages; $35), the ninth book by astronomer and planetary scientist Carl Sagan. Voyager's homeward glance was his idea, and the sight was humbling. "There is perhaps no better a demonstration of the folly of human conceits," he writes, "than this distant image of our tiny world." To say nothing of the folly of wars, which from space would appear to be little more than "the squabbles of mites on a plum...
...vanished for more than six years, leading some authorities to speculate that he may have been in prison or a psychiatric facility. In June 1993 he re- emerged when a bomb injured Charles Epstein, a geneticist at the University of California at San Francisco. Two days later, Yale computer scientist David Gelernter was seriously wounded in the blast from a package sent to his New Haven office. The same day as the Yale attack, the New York Times received a letter that predicted both bombings, saying, "We are an anarchist group calling ourselves FC. We will give information about...
...mail," says Horn, who himself fielded dozens of anxious calls last week. "One event doesn't make it an epidemic." Some of those with the most to fear agree. "Sure, it bothers the hell out of me -- like any terrorist act would," says one prominent computer scientist. "But it's not going to change the way I do things." Says FBI investigator Lou Bertram, who worked on the case until he retired in 1988, "the longer he's out there, the better the odds that he's going to be caught. He has to make a mistake...
Each year, the Committee that administers the award chooses a scientist from a different field of biology to receive the prize...