Charna Halpern was born and raised on the North Side of Chicago. She is a co-founder of the ImprovOlympic, now known as The iO. In 1984, with partner Del Close, she began teaching The Harold to many students in the Chicago theatre community. She and Close co-authored the book Truth in Comedy:The Manual of Improvisation with editor Kim "Howard" Johnson in 1994. In 2005, she penned the book, Art by Committee.
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