What the gulf is that stream anyway? We follow the Gulf Stream from it's source at our equator, and learn why it's there in the first place, how it warms norther Europe and brings some unusual surprises, and how it's affected by Climate change and the awful consequences we can expect. But stay slightly positive, there's a secret* bonus song at the end "Do you want Real Science Questions?"  *Not secret because I told you about it twice now.