A detail of the Mandelbrot set, a fractal named after Benoit Mandelbrot, the French mathematician who investigated it in the 1970s. If you were to zoom in at any point on the intricate, wiggly line, ...

Many animals have a sense of quantity, but they don't count or do math the way humans do. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The ...