Number the dots so that each line of three adds up to 22.

Why are physicists unsure about what it means to say that something has happened? Anthony Aguirre and Sean Carroll explain.

James Maynard, one of the prize winners at the European Congress of Mathematics, is counting primes that don't have 7s in them. But why?

Sara Zahedi has won a prestigious prize at the European Congress of Maths. Your future medical diagnoses, and even the welfare of sea life, may depend on her work.