Our first guest is Sergei Urban. He is not a celebrated scientist or a Nobel Prize winner or a PhD in physics or any of those things that typically describe many people we host on Cool Science Radio. He is a dad, a dad who succeeded in creating two children with a high amount of creativity. In doing so, his kids have always asked for more - more science, more exploration, more fun. Fast forward to today and Sergei is promoting his book, The Dad Lab, after having spent the last four years creating a successful online show with 3.5 million followers all around the globe. He shows simple yet ingenious science experiments you can do around the house, with your kids. He joined me last week when John was probably at home doing his own science experiments.