When you drill 364 meters (1,194 feet) down into Antarctic ice, taking out a cylindrical section called an ice core, you can measure the Earth’s temperature and carbon dioxide levels from over 20,000 years ago. Information is held within the oxygen atoms in the ice and the air bubbles that formed within it.
Measuring ice cores is an effective form of time travel for scientists like the British Antarctic Survey team, who are studying how the Earth’s climate is changing. And Antarctica is full of untapped information:
Antarctica is thought to have been covered by ice for over 30 million years. So far, scientists have drilled ice cores stretching back 800,000 years, and they are now working to extend their records back to 1.4 million years ago.
Then watch these related ice + climate videos next:
• What’s In a 20,000 Year-Old Cube of Ice?
• 5 Things You Didn’t Know About Icebergs
• The Hidden Perils of Permafrost
• Dropping ice chunks down a borehole in Antarctica: What does it sound like?
This Webby award-winning video collection exists to help teachers, librarians, and families spark kid wonder and curiosity. TKSST features smarter, more meaningful content than what's usually served up by YouTube's algorithms, and amplifies the creators who make that content.
Curated, kid-friendly, independently-published. Support this mission by becoming a sustaining member today.