Wow in the World

The loudest show here, and the one most likely to win over a reluctant listener. Mindy Thomas and Guy Raz take a real piece of science or technology and turn it into a goofy story, with sound effects, playful music and a fair bit of potty humor aimed squarely at seven-year-olds. Under the noise there is a genuine idea in every episode, and the hosts pitch it so the grown-ups pick something up too. Episodes run around 20 minutes, which fits a drive to school neatly, and a new one arrives every Monday. The same Tinkercast team also makes the history mystery show Who, When, Wow!, a natural next step once this one clicks.