Frozen in time
What chemical clues locked away in ancient ice tell us about Earth’s history
Some scientists literally go to the ends of the Earth to find answers to their questions. These intrepid researchers leave the comfort of their homes for months at a time to take part in expeditions to the planet’s polar regions. Here they hunt for chemical clues about our planet’s history that have been frozen away in the under the ice sheets for thousands of years. Analysing these clues reveals how Earth’s atmosphere has changed over time, and helps them understand our climate today and how it might change in the future.
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