The mathematics of Grigori Perelman may earn him a million dollars, if no holes are found in his proof of the Poincaré Conjecture.

Win cold hard cash and bring mathematics to the people by entering the THES and OUP science writing competition.

One million dollars is waiting to be won by anyone who can solve one of the grand mathematical challenges of the 21st century. In the second of two articles, Chris Budd looks at the well-posedness of the Navier-Stokes equations.

If you had a crystal ball that allowed you to see your future, what would you arrange differently about your finances? Plus talks to the Government Actuary, Chris Daykin about the pensions crisis, and how actuaries use statistical and modelling techniques to plan for all our futures.

The Riemann Hypothesis is probably the hardest unsolved problem in all of mathematics, and one of the most important. It has to do with prime numbers - the building blocks of arithmetic. Nick Mee, together with Sir Arthur C. Clarke, tells us about the patterns hiding inside numbers.

To study a system, mathematicians begin by identifying its most crucial elements, and try to describe them in simple mathematical terms. As Phil Wilson tells us, this simplification is the essence of mathematical modelling.

The work of Donald Coxeter, who died on 31 March 2003, will continue to inspire both mathematicians and artists.

Winning the first Abel Prize just might elevate mathematician Jean-Pierre Serre to celebrity status!

As the largest experiment ever conducted on GM crops ends, environmentalists are concerned that the maths might not add up.

Mathematicians are testing a silicon chip that mimics the function of a part of the human brain concerned with memory. Is this some maths you'd rather not forget?

Scientists have for the first time measured the speed of gravity and tested Einstein's assumption - or have they?