# plane geometry

In 1694, a famous discussion between two of the leading scientists of the day -
Isaac Newton and David Gregory - took place on the campus of Cambridge University. The discussion concerned the kissing problem, but it was to be another 260 years before the problem was finally solved. |
Last October, two mathematicians won £1m when it was revealed that they were the first to solve the Eternity jigsaw puzzle. It had taken them six months and a generous helping of mathematical analysis.
Mark Wainwright meets the pair and finds out how they did it. |