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LettersThis Week's Letters"Call of the wild"Researchers debate the origin of "the domestic dog" in light of a study that, using "a molecular clock," arrived at an early date--about 135,000 years ago--when dogs diverged from wolves. Scientists discuss whether data from satellite radar interferometry and ground measurements support the conclusion that the Greenland ice sheet is thinning and contributing to sea-level rise.How to Submit a Letter to the Editor
Volume 278, Number 5336,
Issue of 10 October 1997
pp. 205-208. |
Science. ISSN 0036-8075 (print), 1095-9203 (online)