PLEASE NOTE: We are unable to offer transcripts for our programme interviews. Today is broadcast live and the running order is subject to change.
Tory leader David Cameron has promised his party would address voter disgust over MPs' expenses with a dramatic redistribution of power. And US President Barack Obama has spoken to the leaders of Japan and South Korea to assure them of US defence support after North Korea's nuclear test.
European fisheries ministers have concluded a meeting in Brussels with a consensus to effectively scrap current rules that decide fishing quotas. Dr Euan Dunne, head of marine policy at the RSPB, discusses if there is widespread support for the changes.
Church of Scotland leaders have voted to uphold the decision to appoint a gay minister to a church in Aberdeen. Scotland correspondent Colin Blane and Rev Ewen Gilchrist, interim moderator at the Queen's Cross Church in Aberdeen - the church at the centre of the controversy, discusses if the issue could divide the Church.
The former Roxy Music keyboard player, Brian Eno, is in Australia where he's planning to do something remarkable with the sails of the Sydney Opera House. Correspondent Phil Mercer explains the series of moving pictures to be projected onto the building.
How will public anger about recent revelations on MPs' expenses affect voting patterns in the upcoming European elections? Political research editor David Cowling and Ed Davey, Lib Dem foreign affairs spokesman, discuss the extent to which policy will be the main deciding factor for voters.
Divers say they have found the wreck of a vessel which may have been sent to relieve Bonnie Prince Charlie after his 1746 defeat at the battle of Culloden. Correspondent Chris Dearden reports on plans to fully excavate the wreck to determine its historical significance.
The government is under pressure to re-think its new motorcycle test following a series of crashes in the first few weeks of its use. Rob Booth, chief instructor of the Academy of Safe Motorcycling, discusses the manoeuvre known as "the swerve test".
The first woman to become the Oxford Professor of Poetry, Ruth Padel, has resigned following questions over her role in an alleged smear campaign against a rival. The poet Michael Horowitz explains why she has chosen to step down.
The UN Security Council has condemned North Korea for its nuclear test. UK Ambassador to the UN Sir John Sawers and US foreign policy expert Mark Fitzpatrick, discuss North Korea's claims that it is prepared for a "pre-emptive" attack by the US.
Tory leader David Cameron has promised his party would address voter disgust over MPs' expenses with a dramatic redistribution of power, if elected. Shadow foreign secretary William Hague discusses Mr Cameron's proposals - which include fixed-term Parliaments and free votes for MPs.
Riding a bicycle in a city with a fixed gear and no brakes might seem like a foolhardy idea. Washington correspondent Kevin Connolly investigates how, on the streets of urban America, nostalgia and the sheer challenge is prompting a grass-roots affection for fixed gear bikes.
The Taliban is recruiting children and teenagers as suicide bombers to carry out attacks across Pakistan, authorities say. Correspondent Owen Bennett-Jones reports on claims that many children are being kidnapped before being taken to "suicide nurseries".
The Scottish Fishermen's Federation has said it is delighted with European Union moves to scrap current rules which decide fishing quotas. James Barratt, of Cambridge University, discusses if overfishing in fresh water, reportedly in around 1000 AD, is similar to the current problems with open sea fishing.
North Korea has test-fired two more missiles, hours after the UN Security Council unanimously condemned its nuclear test, South Korean reports say. Correspondent John Sudworth says that these new tests just add to the sense of tension in neighbouring countries.
The resignation of Ruth Padel as Oxford Professor of Poetry has shone a light into the murky world of academia. Lisa Jardine, professor of Renaissance studies at Queen Mary, University of London, and Mary Beard, professor of classics at Cambridge University, discuss if academia is full of "boring truths" or, as fiction has depicted, rather exciting.
Conservative leader David Cameron is promising that, if elected, he will consider major reform to the political system to restore the public's faith in politics. Former Tory MP Michael Brown and Matthew Taylor, chief executive of the RSA, discuss if the power of the executive is likely to be reduced.