Filled with Fear and Phobias (Inspired by White Noise)

This week on Know It All, Greg Brown and Mitch Moffit from AsapSCIENCE look at why we like getting scared and what exactly happens in our brains when we experience fear. Inspired by the movie White Noise, they also look deeper into just how common phobias are, and why humans have overwhelming fears of everything from spiders to heights to a fear of phobias themselves.