Publishing early in recognition of the arrival on the red planet of NASA's Mars Science Laboratory (MSL) Curiosity Rover, this week we talk to members of the mission team, revisit some previous successful planetary explorations and hear how UK engineers have made it possible for Rovers to think for themselves. Plus, news of why planets orbit in a plane and whether elephants purr, or just hum... Like this podcast? Please help us by supporting the Naked Scientists)
