If you've got older kids, you won't want to miss this temporary
exhibit (through Sept. 1). In our preview, we compared the human
centrifuge to a scaled-down Gravitron. But really it's more similar
to the Gravitron's carnival cousin, the teacup ride. Kids will love
testing the concepts of spin while mom gets a great arm workout.
And there are lots of other fun twists to try, from the racing
rollers to the air thrusters, and even a cool spinning chair.