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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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