In a special bonus episode of Space Boffins Richard Hollingham celebrates Apollo 15 astronaut Al Worden, who died in March. The podcast features extracts from interviews Richard conducted with Al, including previously unbroadcast material, and includes the astronaut's comments on being the loneliest human, the stamps controversy and his relationship with mission commander Dave Scott. Al describes what it was like to make the first space walk in deep space and his work since leaving the space programme. Richard also talks to Vix Southgate - Al's friend and business manager in the UK - about the... Like this podcast? Please help us by supporting the Naked Scientists