Ice Age Temperatures Help Predict Future Warming


Scientists determined that temperatures were 11 degrees cooler during the last ice age—and that finding has implications for modern-day warming.

Listen to the podcast on Scientific American’s 60-Second Science.

Researchers reconstructed ancient temperatures using the chemistry of fossil plankton like this, and then combined the data with a computer model to paint a full picture of glacial climate. (Credit: Hannes Grobe via Wikimedia Commons)