One of the coolest things about math is when it can actually be applied to the real world, like when it helps you figure out in what direction to shoot a cannon ball to hit your nemesis’ house, or how to beat the house at Black Jack. But even those applications are almost always about physics or chemistry and rarely about biology, since life can’t be bothered with such rational things as math.
The video below is therefore very cool because it shows that the leaves in plants are generally spaced in a mathematical series, because that’s the optimal way for leaves to grow such that they fill in the most available space. And because of that simple fact, plant growth can be predicted mathematically, which makes math that much more interesting.