## packing problems

We talk to Maryna Viazovska, who in 2016 made a breakthrough in the theory of sphere packings.

How to optimally fill a box with eight-dimensional oranges.

**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.

**Mark Wainwright**meets the pair and finds out how they did it.