What’s In a 20,000 Year-Old Cube of Ice?
What’s In a 20,000 Year-Old Cube of Ice? Be Smart
What’s In a 20,000 Year-Old Cube of Ice?
Earth’s climate is changing in a big way, and it’s because there's more carbon dioxide in the atmosphere than at any point in our species’ history. But Earth’s climate has changed before. How do we know that this time we’re the cause? We know thanks to tiny bubbles of ancient atmosphere trapped in ice.
About the Program
Be Smart
Join Joe Hanson as he explores curiosity and illuminates the science behind… well, everything.
Here’s your ticket to stream.
Stream the best of public television on demand with GPB Passport: MASTERPIECE dramas and mysteries, NOVA, Ken Burns documentaries, Finding Your Roots and more. Binge full seasons, get early access to new episodes before they air on television and catch up on programs you missed with this powerful donor benefit from GPB!
