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The art and science of laughter

Name: The art and science of laughter
Uploaded: 2014-03-30T09:11:00-0400
Duration: 7 min 34 s
Description: Susan Spencer of “48 Hours” sits down with the writers of the “Late Show With David Letterman” to find out what some of the funniest people on the planet know about humor, and learns that being funny is serious work.

Susan Spencer of “48 Hours” sits down with the writers of the “Late Show With David Letterman” to find out what some of the funniest people on the planet know about humor, and learns that being funny is serious work.