Space to play or pause, M to mute, left and right arrows to seek, up and down arrows for volume. Okay, so what we're going to fold now is a Lumi ball, which is a spherical shape. We start to fold our ...

We don't usually associate maths with beautiful objects of art, but if you look closely, you'll find that most designs use mathematical ideas and concepts. Symmetry, for example, is commonly used in ...