- guardian.co.uk, Monday 7 March 2011 00.01 GMT
Colin Pillinger, the man who lead Britain's mission to Mars in the form of 2003's Beagle 2 project tells us, seven years on, what he thinks happened to his failed spacecraft. Colin also criticises the European Space Agency for its role in the mission.
In our show and tell section we Ian Sample tells us about growing brain cells which could help with Alzheimer's, Alok Jha discusses how scientists are often ignored during national emergencies, and Robin McKie looks at a new mission to Mercury.
Lester Brown, president of Earth Policy Institute and a man the Washington Post called 'one of the world's most influential thinkers' tells us about his new concept of 'food bubbles'. It's in his new book World On The Edge is out now.
There are also a few mentions for some of you who got in touch following last week's podcast.
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