We review the third of this year's nominees for the Book of the Year

A selection of weird goings-on from the world of fluid mechanics

Some summations seem strangely slippery...

Blaise Pascal was driven to begin the mechanisation of mathematics by his father's struggles with an accounts book in 17th century France.

The geometry of psychedelic hallucinations

Moonlighting agony uncle Professor Dirichlet answers your personal problems.