David Cameron has called on Gordon Brown to apologise after one of the prime minister's aides, Damian McBride, was forced to resign over his role in setting up an online smear campaign against top Tories. Chief political correspondent Nicholas Watt examines the damage to the government, and looks at the significance of the affair for the UK's political blogosphere.
Education editor Polly Curtis reports from Cardiff, where the National Union of Teachers conference has voted to oppose the use of unqualified staff such as bouncers and ex-soldiers to cover lessons.
Martin Wainwright reports from Manchester, where the arrest and conviction of 11 gang members has transformed life in the city's Moss Side district.
Baroness Susan Greenfield tells the Guardian's Jemima Kiss how social networking sites such as Facebook and MySpace can damage children's attention span.
