This surprising result about 3D shapes tells us something deep about the nature of space.
Can you find a path through on this city map that crosses every bridge exactly once? Euler's answer to this problem started off the filed of graph theory.
James Maynard, one of the prize winners at the European Congress of Mathematics 2016, is counting primes that don't have 7s in them. But why?
Prime numbers, fluid dynamics and architecture at the European Congress of Mathematics in Berlin.