When I was 13, I filled a classroom with smoke. And that's when I learned something about curiosity. My 15-year-old brother was substituting for a Sunday science enrichment class.We had absolutely no idea what we're doing. But we did know one thing. After-school programs were boring.So, whatever we created had to be different. Something kids would actually look forward to. That day, we filled a room with theatrical smoke, we handed out small glass mirrors, and the kid bounced 3D laser beams around the room ...