Electric cars and Exploding Champagne

How much does it cost to run an electric car? Why does shaken champagne not explode if you wait a while before opening it? Would a car filled inside with helium run for longer? Is man the only mammal to have racial features? We dig into these questions on this week's show, as well as reveal if hyper-space travel is possible, explain how a memory stick works and investigate if a compass would work on the moon! Like this podcast? Please help us by supporting the Naked Scientists