What's the scariest two-word horror story? English grammar. If linguistics is the Mount Everest of subjects, then grammar contributes to altitude sickness in all but the most experienced climbers. In this episode, Cate talks to linguistics expert Professor David Crystal about why linguistics matters, how we can untangle ourselves from grammatical confusion, and start playing with words again. Children are, after all, natural rap poets and learning grammar is just like driving a car, taking us to exciting new places.