## News from the world of Maths

How big is the Universe? And how small is the smallest thing within it? This cute website developed by Cary Huang puts things into perspective. It lets you explore the entire range of scales, from the smallest length (the Planck length) all the way up to the entire Universe, via atoms, people, giant earthworms, planets, galaxies and more.

If you are, then you may be one of the 5 to 7% of the population suffering from dyscalculia, the mathematical equivalent of dyslexia. But unlike many dyslexia sufferers, you probably haven't received the help you need to cope with your condition. As a recent article published in the journal Science points out, dyscalculia is the "poor relation" of dyslexia.

If you've ever marvelled at the elegance of a paper crane or just struggled to refold a map you will enjoy the next Maths-Art seminar from the London Knowledge Lab.

Astronomers have this month trained the world's largest steerable radio telescope on 86 Earth-like planets. The data collected by the telescope will later be analsyed by an estimated one million amateur alien hunters, users of SETI@home, for messages from other civilisations.

Guilt, so some people have suggested, is what makes us nice. When we do someone a favour or choose not to exploit someone vulnerable, we do it because we fear the guilt we'd feel otherwise. A team of neuroscientists, psychologists and economists have this month produced some new results in this area, using a model from psychological game theory.

A talent search has just begun to find competitors to represent the UK in the first ever European Girls' Mathematical Olympiad (EGMO). But why should a girls-only competition be held and what do we hope to achieve?

We came across the excellent Math Encouters Blog through their post Dimensional Analysis and Olympic Rowing, a response to a *New Scientist* article by *Plus* author, John Barrow.

Math Encounters is about those problems we might encounter any day where a little bit of math can really help.

Ah the humble triangle. This simple shape is one of the first we ever learn. But perhaps you didn't realise just how important triangles are...