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Warnings from the Ice
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Program Overview
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The global climate naturally cycles between warmer and colder
periods. Recent climate changes, however, have caused scientists to
wonder whether these alterations are part of the natural cycle or
created by human activity. The Antarctic ice may hold some answers.
Each year scientists have about a 40-day window in January and
February to visit this remote continent and collect data.
By analyzing tiny bubbles of air trapped within ice cores and
monitoring massive ice sheet movement, researchers glean clues about
past global climates and work to predict future conditions. This
NOVA program follows scientists as they battle the extreme Antarctic
weather to gather data they hope will reveal new insight into the
nature of global climate change.
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