Chief political correspondent Nicholas Watt explains what the Liberal Democrats are planning in the event of a hung parliament, and how that will throw both Labour and the Conservatives a lifeline. He has unearthed a "Miliband option" in an intriguing memo from 1974 being distributed.
As the troop surge in Afghanistan continues, Declan Walsh tells us how the operation is so far being viewed as a success. Steven Morris visits Salisbury Plain to speak to an army chaplain and an imam who are offering spiritual help to those being deployed to Afghanistan.
Sean Carroll, a theoretical physicist at the California Institute of Technology, discusses his new book From Eternity to Here: The Quest for the Ultimate Theory of Time. A longer version of that interview is available in our latest Science Weekly Extra podcast.
Paul Lewis describes why a 1959 conviction is still making life difficult for 70-year old John Crawford.
And, as Sir Terry Wogan returns to the airwaves, the Guardian's radio critic Elisabeth Mahoney thinks his new show needs to do better.
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