How does soap make bubbles?

We know how important it is to wash our hands with soap and warm water. Get between the fingers, under the nails, all that good stuff. But why does soap get all foamy when you add water? Where do those bubbles come from? We asked University of Minnesota professor Frank Bates to help us find the answer. Got a question that’s bubbling up in your brain? Send it to us at BrainsOn.org/contact, and we’ll help pop the question! See omnystudio.com/listener for privacy information.