The Search for Extraterrestrial Intelligence and the challenge of looking for space aliens and why they never attack Belgium is under scrutiny this month. Plus, Richard Hollingham also reports from the Mojave desert on the progress being made by Virgin Galactic and XCOR to fly tourists into space. And he talks to a U2 spy plane pilot about boiling blood and life above the Earthlings... Like this podcast? Please help us by supporting the Naked Scientists