“The world is kinda stressful right now but I wonder if toys are a way to relieve that a little bit,” she says. Mildred & Dildred is located at 1725 N. Swan Road, open 10 a.m. to 5 p.m. daily.

It goes like this: “Big whirls have little whirls, That feed on their velocity; And little whirls have lesser whirls, And so on to viscosity.” What does this have to do with Von Karman vortices?