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Signs of unstable ice in Antarctica

 The ice covering West Antarctica melted then reformed in the recent geologic past, raising concerns about its future stability.

References:

Scherer, R.P., et al. 1998. Pleistocene collapse of the West Antarctic ice sheet. Science 281(July 3):82.

Further Readings:

Monastersky, R. 1993. Fire beneath the ice. Science News 143(Feb. 13):104.

Sources:

Richard B. Alley
Pennsylvania State University
Departmant of Geosciences
503 Deike Building
University Park, PA 16802

Reed P. Scherer
Uppsala University
Department of Earth Sciences
Villavägen 16
S-752-36 Uppsala
Sweden

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