99% Invisible is my all-time favorite podcast, always revealing something profound, meaningful, and funny, about the side-effects and strengths of humans' designed world. Roman Mars is a relaxed, masterful storyteller with the broadest possible view of the concept of "design", encompassing nearly all of human constructive activity, from language to skyscrapers. It's a bonus that the show is clear and clean enough to be enjoyed together with my eight-year-old daughter.