Got five minutes for a coffee? Grab your favourite cup, and hit play to take a closer look at Earth's magnetic field, it's stranger than you think! Let's see what makes it work, and explore the history of how north strangely becomes south sometimes. Stick around to see when it's likely to happen next.  Episodes are at cosmiccoffeetime.buzzsprout.com Follow on Twitter @CosmicCoffTime for some special content. Want to suggest a topic? email cosmiccoffeetime@gmail.com