3 reasons why 'global warming' has fizzled: Expert

The age of "global warming" collapsed with the fall of Lehman Brothers in September 2008, author-economist Rupert Darwall told CNBC on Friday. "After that, the world had more important things to focus on, like fixing the financial system," he added.

Watch the above video for the two other reasons the author of the book "Age of Global Warming" gave on "Squawk Box" about why climate change is low on the priority list of world problems.

By CNBC's Matthew J. Belvedere. Follow him on Twitter @Matt_SquawkCNBC.

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