## News from the world of Maths

In their new show X&Y Marcus du Sautoy and Victoria Gould use mathematics and the theatre to navigate the known and unknown reaches of our world.

If you like the Rubik's cube then you might love the Magic Cube. It's got numbers on the little faces rather than colours and it's quite a bit harder.

A nice new interactive map shows how papers published in various maths related areas relate.

*Plus*and live in or near London, then here's your chance to see some live origami maths.

A team of Australian researchers has delivered dire news for polar ecosystems, predicting that in some regions biodiversity may be reduced by as much as a third within decades. It's the result of a tipping point induced by global warming.

This year's British Science Festival will take place from 7 - 12 September at the University of Newcastle and there's plenty of (mostly free) maths on offer.

Why are drug induced hallucinations so compelling that they apparently provided much of the inspiration for early forms of abstract art? Researchers suggest that the answer hinges on an interplay between the mathematics of pattern formation and a mechanism that generates a sense of value and meaning.

Number theory is famous for problems that everyone can understand and that are easy to express, but that are fiendishly difficult to prove. Here are some of our favourites.