Word: threshold
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Dates: during 1970-1979
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...concluded: "There is no reasonable alternative to regulation under law." Massachusetts Governor Michael Dukakis, involved in the controversy over genetic-engineering projects at Harvard and M.I.T., argued for the public right to regulate the research. Said he: "Genetic manipulation to create new forms of life places biologists at a threshold similar to that which physicists reached when they first split the atom. I think it is fair to say that the genie is out of the bottle...
...definitively answered. Since May 1976 the Federal Aviation Administration has been monitoring Concorde flights in and out of Washington's John Foster Dulles airport. The findings so far: the plane's noise level has almost always been below what most experts regard as the threshold of aural pain. Many of the airport's neighbors have even phoned in complaints about the Concorde when the offending craft has actually been a distinctly subsonic DC-9. In contrast to the high-pitched whine of a Boeing 707 or 747, the Concorde produces a throaty low-frequency rumble that rattles...
...tactical nuclear weapons. Its 7,000 atomic warheads, kept in Europe by the U.S., are theoretically to be delivered by plane, cannon and missile against relatively limited targets like supply depots or massing tanks. In practice, however, the U.S. would have to hesitate before crossing even a tactical nuclear threshold, for that could be the first step toward triggering a global atomic exchange. If Warsaw Pact troops were to push into and occupy West German urban areas, NATO would face the agonizing prospect of unleashing a tactical atomic barrage against the cities and towns of its own member...
Halpurn said a study of lethal mutations caused by radiation showed "the only safe threshold is at zero rems per year." A rem is a measure of radiation...
...President may avoid reporters' questions for a time, but events claw at him 24 hours a day. There is no escape. "The whole damned world ends up on the White House threshold," sighed a Ford aide last week. At about that moment Ford was down in the basement, sleeve rolled up, getting his swine-flu shot to demonstrate it was safe. Three elderly people had died in Pennsylvania after receiving the shot, and doubts about the program were immediately directed at the White House. HEW Secretary David Mathews flagged the President's Washington staff, which informed the campaigning...