News

Which voting system is best?With the day of the referendum on the UK voting system drawing nearer, Tony Crilly uses a toy example to compare the first past the post, AV and Condorcet voting systems, and revisits a famous mathematical theorem which shows that there is nothing obvious about voting.
Vote for your favourite Olympic sportIs there maths in beach volleyball? Or show jumping? Or in Taekwondo? If there is, then Plus is going to find it. But to know where to start, we need your help: we'd like to know which of the Olympic sports you'd most like to see covered in Plus. So please vote below — you can choose up to three sports. We'll do our best to cover your favourite sports in the run-up to London 2012 and our coverage will also be shared by our Olympic project Maths & sport: Countdown to the games
CAPTCHA chaosIf you are prone to forgetting your passwords, you're not alone. To make sure we remember all our passwords, many of us take measures that defeat the purpose. These include, as studies have shown, using the same password for everything or writing them down on post-it notes and sticking them to our computer. But such sloppiness makes easy work for evil agents out to steal our data and identities. Now physicists from the US and Germany have devised a safer way of using passwords that takes account of the human need for memorability.
Maths in a minute: The fundamental groupTopology considers two objects to be the same as long as you can morph one into the other without breaking it. But how do you work with such a slippery concept? One useful tool is what's called the fundamental group of a shape.
Making gold for 2012Last week leading researchers in sports technology met at the Royal Academy of Engineering in London to demonstrate just how far their field has come over recent years. The changes they make to athletes' equipment and clothes may only make a tiny difference to their performance, but once they're added up they can mean the difference between gold and silver.
The Abel Prize 2011 goes to John MilnorThe Abel Prize 2011 goes to John Willard Milnor of Stony Brook University, New York for "pioneering discoveries in topology, geometry and algebra".
Is space like a chessboard?Physicists at the University of California, Los Angeles set out to design a better transistor and ended up with a discovery that may lead to a new explanation of electron spin and possibly even the nature of space.
A Schock Prize for an enormous theoremThe Rolf Schock Prize in Mathematics 2011 has this week been awarded to Michael Aschbacher "for his fundamental contributions to one of the largest mathematical projects ever, the classification of finite simple groups".
Find the maths in your city and win great prizes!

Our cities are filled with buildings, roads, cars, buses, trains, bikes, parks and gardens. They are crisscrossed with power, water, sewage and transport systems. They are built by engineers, architects, planners, technologists, doctors, designers and artists. Our cities are shaped by our environment, our society and our culture. And each and every part is built on mathematics.

You can join Plus author and Charles Simonyi Professor for the Public Understanding of Science, Marcus du Sautoy, on a mathematical adventure in the city. Marcus and his team of mathemagicians are constructing walking tours of the city — but they need your help!

Maths and Sport: Countdown to the Games — 500 days to go!With 500 days to go everyone here at the MMP is getting very excited about the 2012 Olympic and Paralympic Games. In July 2012 medals will be won, records broken and stories of triumph and tragedy will be told — and here at Plus we are looking forward to revealing the mathematics behind them.
Leaning into 2012Rising like a giant pringle from the Olympic Park construction site, the Velodrome is the first of the 2012 London Olympic venues to be completed. With its sweeping curved roof and beautiful cedar clad exterior the Velodrome is a stunning building. But what most of the athletes are excited about is the elegant wooden cycle track enclosed inside, the medals that will be won, and the records that might be broken, in the summer of 2012.
Happy Pi day!
Today is Pi day - it's March 14th, written as 3/14 in the US - and to celebrate we bring you some of our favourite Pi articles: