Update: 12:50

Blair science adviser calls for differential fees
Sir Richard Sykes, rector of Imperial College and government adviser on science, today called on prime minister Tony Blair to allow universities to charge differential fees. Sir Richard said the government must "do something radical" with the university system. "We lose money for every student and every research grant we take in because they do not cover the full costs of teaching and research."

Vitamin C can guard against strokes and cancers
One or two extra apples or oranges a day could cut the risk of dying early from heart disease or cancer by 20 per cent, scientists from Oxford University said today. Researchers have found that low blood levels of vitamin C are associated with higher death rates from heart disease and strokes in men and some cancers in men.