God, the episode titles really don't really treat our guests very well, do they!? Dr Lucy Rogers is an absolutely world class science communicator, an inventor with a sense of fun and a whole lot to say to us on the topic of the World's Worst Science Communicator. She shares stories of fat trains and thin stations, Barry dives down ferret-holes in search of the evolutionary tree of fairies, and Ben takes aim at a big hitter: Alexander Graham Bell, hater of sign language.