Frozen in time?
'We knew there was unusual local warming on the peninsula, which had caused the collapse. But what no one knew was whether this collapse had ever happened before.' Carol Pudsey, British Antarctic Survey
Scientists can examine layers of ice built up over hundreds of thousands of years to look back in time at past climates. But if the ice has melted, you've got a problem - no record.
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The oldest cores are drilled back through over 400,000 years worth of ice layers using a tool like an apple corer
Image: British Antarctic Survey |
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