Word: mcnair
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...SOUTH CAROLINA GOVERNOR 81% of the vote U.S. SENATOR (2 years) McNair (D)* 191,000 Ropers (R) 136,000 Thurmond (R)* (winner) Morrah (D) U.S. SENATOR (6 years) Hollings (D) (winner Parker...
ANDREW H. McNAiR Professor, Geology Department Dartmouth College Hanover...
While the unfolding mystery of Stonehenge traces some surprising knowledge of astronomy back to Stone Age Britons, the steadily growing evidence of paleontology is tracing life itself farther and farther into the past. Last week Dartmouth Professor An drew McNair reported to the Geological Society of America that he had discovered the remains of advanced forms of life 120 million years older than any recognized before. As for simpler, one-celled organisms, Harvard's Elso S. Barghoorn told the society that he has found them to be a billion years older than anyone had previously suspected...
Mother Lode. Geologist McNair made his discovery last summer after sighting a distinctive rock ledge on remote Victoria Island in the Canadian arctic. Clearly visible on the surface of the Pre-Cambrian rock, which had somehow escaped the disturbances of mountain building and the pressures of overlying rock, were the fossilized tracks of burrowing, wormlike animals -an encouraging indication that more fossils might be near by. Says McNair: "I knew how gold prospectors felt when they stumbled across the mother lode." Splitting open the rock, he found the remains of 47 primitive, clamlike brachi-opods that radioisotope dating proved...
...Before McNair's discovery, there had been no evidence that advanced forms of life existed until the Cambrian period began, 600 million years ago. Many scientists believed that there was not enough oxygen in the Pre-Cambrian atmosphere to support the development of animals with specialized organs. Now the highly evolved and efficient digestive, locomotive, respiratory and nervous systems of McNair's brachiopods and worms suggest that the earth's atmosphere had an ample supply of oxygen 720 million years ago, and probably for much longer than that...