Want to watch better-quality PBS Video? Sign in to access HD streaming!
Robert Lynch is currently completing his doctorate in Evolutionary Biology at Rutgers University. One of his main areas of study is the evolutionary utility of laughter, i.e. why laughter is so important to the human species. Robert doesn't just talk and write about laughter; he also creates it as a stand-up comedian in New York City comedy clubs.
Upgrade Your Viewing Experience
This video is available to CallSign viewers with a Passport account. Passport gives you access to a wealth of premium content not previously available online, including full seasons of your favorite shows.