Science writer Simon Singh and Tracey Brown from Sense About Science tell us about Libel Reform Week and the campaign to change Britain's libel laws and protect scientific freedom of expression.
Simon is currently locked in a legal battle over a comment piece published in the Guardian.
Matthew Applegate, aka Pixelh8, is performing an audiovisual study as part of Cambridge Science Festival. We went along to the Institute of Astronomy to hear the telescopes he used as his musical instruments.
Ian Sample speaks to Kees van Deemter about the importance of being vague. Kees is trying to program computers to be a little more ... erm ... fuzzy? His new book Not Exactly: In Praise of Vagueness is out now.
The Guardian's Nell Boase joins Alok in the studio.
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