The lecture circuit seems to have gone into overtime. This coming Monday Richard MacCormac will be talking about his BBC project to a Royal Academy audience at the Geological Society's premises; later in the week, an evening about high-rise buildings takes place organised by Richard Coleman at the same venue, with speakers including Will Alsop , which should be lively. The implications of high-rise development in London are still sinking in, especially given the support for the second-rate tower scheme at Ilford by Haskoll Associates, which has recently won Mayor Livingstone's backing. Wake up, Ilford! Perhaps high-rise will only really come into its own if a tall building wins the Stirling Prize. Norman Foster's 'gherkin' must be the candidate for this.