Presented by Sarah Montague and James Naughtie. Business secretary John Hutton explains the government's plans to deal with existing radioactive waste and talks about the next generation of nuclear power stations. Documents obtained by the BBC suggest the Zimbabwean military is actively involved in running the re-election campaign for Robert Mugabe. Ian Pannell has spent time inside the country, investigating the election tactics used by ZANU-PF, the ruling party. The government won the vote on 42-day detention for terrorism suspects by nine votes. DUP MP Gregory Campbell explains how DUP members were persuaded to vote in favour of the bill. Ben Wright reports from Westminster on a day of deals. Environmental groups criticise the government's plans to build a giant tidal barrage across the river Severn estuary to generate energy. Jeremy Cooke reports from a helicopter over the proposed site. Thought for the Day: With Reverend Angela Tilby, a vicar in Cambridge. The share prices of large home building companies have fallen dramatically. John Slaughter of the Home Builders Federation says the government must act. What shape will the debate on the Counter-Terrorism Bill take in the Lords? Former Attorney General Lord Goldsmith and Lord Carlile give their views. An intelligence official has been suspended after leaving sensitive documents relating to al-Qaeda on a commuter train. The person who found them sent them to the BBC. Security correspondent Frank Gardner broke the story. Dan Griffiths revisits Sichuan province in south-west China one month after the earthquake that killed nearly 90,000 people. The government wants children to start spending school time watching films. Reporter Rebecca Jones explains the government's motivation.