Brad Wallace May 5, 2015 Circus: Science under the big top - Canadian made, currently in San Diego Brad Wallace May 5, 2015 This is very cool. I wonder when it will come back to Canada? I'd love to see it. CIRCUS: Science Under the Big Top features twenty multi-station interactive exhibits that delve into everything from clown makeup to the art of contortion to animal communication. The family-friendly exhibition lets visitors of all ages explore the science behind the spectacle while learning the tricks of the sword swallower, uncovering the illusion of the flea circus, discovering the psychology of common circus sounds and more.