Articles

Unreasonable effectivenessWhen it comes to describing natural phenomena, mathematics is amazingly — even unreasonably — effective. In this article Mario Livio looks at an example of strings and knots, taking us from the mysteries of physical matter to the most esoteric outpost of pure mathematics, and back again.
Constructive mathematicsIf you like mathematics because things are either true or false, then you'll be worried to hear that in some quarters this basic concept is hotly disputed. In this article Phil Wilson looks at constructivist mathematics, which holds that some things are neither true, nor false, nor anything in between.
Outer space: Another Christmas CarolWhat Dickens thought about statistics
Understanding uncertainty: What was the probability of Obama winning?

This may seem like an odd question — after all, he’s won — but it opens up some deep philosophical issues surrounding probability. David Spiegelhalter investigates how probability can be defined.
Editorial
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A risky business: how to price derivativesIn the light of recent events, it may appear that attempting to model the behaviour of financial markets is an impossible task. However, there are mathematical models of financial processes that, when applied correctly, have proved remarkably effective. Angus Brown looks at one of these, a simple model for option pricing, and explains how it takes us on the road to the famous Black-Scholes equation of financial mathematics, which won its discoverers the 1997 Nobel Prize in Economics.
Sun
A new kind of singing starThe Sun is no longer singing solo and is now part of a stellar choir
butterfly
Born from broken symmetryThe 2008 Nobel Prize in Physics has been awarded.
foam
Swimming in mathematicsThe mathematics of foam coats Olympic swimming venue
Outer space: Pretty mean pricesHow to keep inflation down
Understanding uncertainty: How long will you live?

Well, no-one knows exactly, but using stats you can make a good guess. This article tells you how and has an interactive life expectancy calculator. Do you dare to find out?
Editorial

Election issues