“…If you can wiggle your ears, you’re demonstrating evolution. We have three muscles under our scalp that attach to our ears. In most people they’re useless, but some people can use them to wiggle their ears. … These are the same muscles used by other animals, like cats and horses, to move their ears around, helping them localize sounds. In those species, moving the ears helps them detect predators, locate their young, and so on. But in humans the muscles are good only for entertainment.” —Jerry A. Coyne (2009). Why Evolution is True (via bonedust)