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Tue Aug 1, 2006 3:20am ET
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SYDNEY (Reuters) - Rare, mother-of-pearl colored clouds
caused by extreme weather conditions above Antarctica are a
possible indication of global warming, Australian scientists said on
Tuesday.
Known as nacreous clouds, the spectacular formations showing delicate
wisps of colors were photographed in the sky over an Australian
meteorological base at Mawson Station on July 25.