Word: haz
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Dates: during 1960-1969
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...creating a harbor and building a 13-mile causeway from the harbor to the airstrip. Such an invasion of bulldozers, concrete mixers and men, said the scientists, would irreversibly damage the ecosystem of the island. They added that the frigate birds would constitute one of the worst aircraft-collision haz ards in the world. The frigate is a sea bird that spends its adolescent years far from the island, returning to mate only after it is mature. Each year, a new crop of adults arrives for the mating ritual, thus posing a problem to aircraft that could last longer than...
Brown of the University of Pennsylva nia. The panel's report, "Potential Haz ards of Back Contamination from the Planets," was made public last week after nearly a year of hush-hush treatment by the National Aeronautics and Space Administration. It added a chill ing new factor to the future of space exploration...