Word: geomorphologist
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Dates: during 1998-1998
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Corals are not the only recorders of climate history. Jay Noller, for example, a geomorphologist from Vanderbilt University, has been studying ancient sediments from Peru's northern desert, which is among the dryest spots on earth--except during El Nino years. Then and only then, torrential rains from a succession of storms compact surface dust into a layer of fine, red soil. From the age of the soils he has examined so far, Noller concludes that the El Nino cycle has been operating for at least 2 million years, and probably much longer...
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