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- <text id=92TT2523>
- <title>
- Nov. 09, 1992: Get Out the Lifeboats. . .
- </title>
- <history>
- TIME--The Weekly Newsmagazine--1992
- Nov. 09, 1992 Can GM Survive in Today's World?
- </history>
- <article>
- <source>Time Magazine</source>
- <hdr>
- THE WEEK, Page 26
- HEALTH & SCIENCE
- Get Out the Lifeboats! Antarctica Is Melting
- </hdr><body>
- <p> New evidence suggests the ice caps are more fragile than
- assumed
- </p>
- <p> If the Earth gets warmer, will the ice caps melt? That's a
- matter of hot debate among scientists who worry about possible
- climatic change. The Antarctic ice sheet alone is larger than
- the continental U.S. and holds a mass of water that if melted
- would raise world sea levels by about 60 m (200 ft.).
- </p>
- <p> Coastal residents could take comfort in the prevailing
- view that Antarctica hasn't thawed for 14 million years, but
- that view is being challenged. A report in Nature suggests
- large portions of the ice cap may have melted just 3 million
- years ago.
- </p>
- <p> The evidence centers on sea-plankton remains found in the
- Transantarctic Mountains at altitudes where no sea should have
- been. By measuring the age of nearby volcanic ash, a team led
- by Peter Barrett at Victoria University of Wellington, New
- Zealand, concluded that the whole area was probably flooded
- during the mid-Pliocene epoch -- when temperatures were only a
- few degrees warmer than today.
- </p>
-
- </body></article>
- </text>
-
-