If there's a multiverse, then how many of its component universes are like our own?

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

Some uncomfortable problems in our understanding of life.

Good news! Not long to wait till the Annual MathsJam!

Here's a selection of our favourite articles on Olympic maths — from dressage, via ping pong, to athletics.

Geneticists find fascinating clues to the origin of life.

Frank Kelly talks about his work on networks and how inspiration can strike out of the blue.

Prime numbers, fluid dynamics and architecture at the European Congress of Mathematics in Berlin.