Word: throughs
(lookup in dictionary)
(lookup stats)
Dates: during 1970-1979
Sort By: most recent first
(reverse)
The test measured knowledge of math concepts, computing skills and the ability to think through problems. The assessment showed that the students have most difficulty with the reading and reasoning involved in word problems. About 60% of the teen-agers knew that the area of a rectangle equals its length...
Larsen's other civic passion was conservation. He donated 162 acres near his house in Fairfield, Conn., to the Audubon Society for a bird sanctuary, which the society named for him and his wife Margaret. He served on the board of the Nature Conservancy, which acquires and manages wild...
2) When polarized light was passed through solutions of water and some of the amino acids, it was deflected to the right. "In all the '20 amino acids we know of on earth," says Ponnamperuma, "the polarized light turns to the left." But, he adds, "In all the pre...
> In an attempt to determine whether organic molecules can form on other planets, scientists at Ponnamperuma's Laboratory of Chemical Evolution filled a container with gases like those in the atmosphere of Jupiter. Then, to simulate sunlight and Jovian lightning flashes, they exposed the gases to ultraviolet light and...
It was 1969. At the San Francisco Opera an Italian tenor named Luciano Pavarotti was singing the role of Rodolfo in La Bohème, Suddenly, midway through the third act, the entire theater seemed to rumble and shudder. Chandeliers began swaying. Members of the audience stood up in confusion; some...