The human eye registers three colors of light: red, green and blue. But pigeons (and many other animal species) can also see a fourth color, ultraviolet. The human eye registers three colors of light: red, green and blue. But pigeons (and many other animal species) can also see a fourth color, ultraviolet. Plants & Animals Other Phys.org – latest science and technology news stories
Your world is different from a pigeon’s—but a new theory explains how we can still live in the same reality
