99% Invisible
Episodes
(Not Just) Another Brick in the Wall
Chicago brick historian Will Quam discusses the city's architectural history through the lens of its humble building material.
100 Objects #20: AA Sobriety Chip
Roman Mars and guest Jamie Loftus explore the history of the AA sobriety chip, tracing its origins to Prohibition and the 1935 founding of Alcoholics Anonymous.
Tootle of a Devilish Song
Reporter Gabe Bullard explores the history of Swiss yodeling, tracing its origins as a cattle call and its evolution into a global phenomenon.