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When Global Warming Was Revealed by a Zig-Zagged Curve

April 16, 2019 in History

By Kieran Mulvaney

The Keeling Curve was among the earliest charts showing that carbon dioxide levels in Earth’s atmosphere were on a steady uptick.

It looks, at first glance, like a doodle, a zig-zag pattern squiggled absent-mindedly on a notepad during an uninspiring meeting. In fact, it has been is the author of At the Ends of the Earth: A History of the Polar Regions, and, most recently, The Great White Bear: A Natural & Unnatural History of the Polar Bear.

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Source: HISTORY

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