This children's maths puzzle has been leaving adults baffled. We're all aware that it's crucial to keep our bodies fit by exercising regularly, but did you realise that your brain also needs a workout ...

Katie has a PhD in maths, specializing in the intersection of dynamical systems and number theory. She reports on topics from maths and history to society and animals. Katie has a PhD in maths, ...

A seemingly impossible math puzzle, discovered stuck to a tree by a passing hiker, has left the internet well and truly stumped. Despite living in an increasingly digital world, math remains something ...