Frozen library of ancient ice tells tales of climate's past

The Ice Core Archive in Copenhagen holds 25 kilometers of ice collected from Greenland, offering insights into prehistoric climate change and human activities over the past 10,000 years. The ice cores contain trapped air bubbles that date back thousands of years, providing information on greenhouse gases and the impact of fossil fuel burning. Scientists hope that studying the ice will help them understand rising sea levels and predict future changes with greater accuracy.