Personally, I don't see old economics and behavioural economics as opposed. It is useful to assume people are rational as a good approximation to their long term behaviour, but it would be unwise not to think how in practice their behaviour may deviate from that simplifying assumption.

Even though disciplined sleeping habits and the adrenalin of live radio ensures that we are very awake while on duty, there is evidence of a phenomenon called circadian desynchronosis which causes one's brain to function slowly at those times of day when it thinks it should be asleep, regardless how wide awake the body is.

But sometimes it's good to dare yourself to do the unthinkable. And rather than stand in front of an audience with no clothes on, I decided to have a go at stand-up comedy.

At the BBC we've had plenty of women in good management jobs. It comes and goes but there's been plenty. On air, I think there's quite a bit more we can do.

Black Friday is not another bad hair day in Wall Street. It's the term used by American retailers to describe the day after the Thanksgiving Holiday, seen as the semi-official start of Christmas shopping season.

We Brits print banknotes out in Debden in Essex, and have contracted it out to the private sector. Here in the U.S. it is a government operation right in the heart of Washington next door to the Holocaust Museum.

Some people harbour an awkward clash of feelings - homosexual attraction on the one hand and shame or embarrassment about that attraction on the other. It is well known that the mind struggles to sustain conflicting views.