Word: elso
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When did life begin on earth? Harvard Paleobotanist Elso S. Barghoorn and his onetime student, J. William Schopf, discovered a possible answer to that intriguing question several years ago, when they found microscopic fossils in ancient South African rocks. These tiny traces of life indicated that single-celled creatures existed as long as 3.1 billion years ago. Now a team headed by Schopf himself has found evidence that could push the dawn of life back at least another 200 million years...
...lunar samples. Another group headed by Edward L. Fireman, lecturer on Astronomy, has determined the time some samples have been exposed to cosmic rays by studying the radioactivity in the samples. Then, the very important subject of the organic substances and their possible implications about life are studied by Elso S. Barghoorn, professor of Botany. Finally, special types of moon rock called anorthosites which give clues about the moon's formation are studied by Ursula B. Marvin and John A. Wood, both associates of the Harvard College Observatory...
Aldrin was joined by Clifford Frondel, professor of Mineralogy: Elso S. Barghoorn, professor of Botany; and Ursula B. Marvin, staff member of the Smithsonian Astrophysical Observatory and associate of the Harvard College Observatory. The meeting was sponsored by the Harvard-Radcliffe chapter of Sigma Xi, a scientific fraternity...
...four research groups are headed by Elso S. Barghoorn, professor of Botany, Edward L. Fireman, lecturer on Astronomy, Clifford Frondel, professor of Minerology, and John A. Wood, associate of the Harvard College Observatory...
...scientists, Clifford Frondel and Elso Barghoorn of Harvard Hurley, Klaus Biemann and of Harvard Hurley, Klaus Biemann and Gene Simmons of M.I.T. and Dr. John Wood of the Smithsonian Astrophysical Observatory, were chosen on the basis of proposals submitted by them to NASA and judged by a team of experts. Approximately 150 investigators were approved, according to previous work in minerology, geology and related fields...