Here’s what happens to the brain when we feel fear

What are you afraid of? Horror movies? Creepy crawling spiders? Speaking in front of a crowd? We all have a fear or two, and no matter what scares us, we know it can cause our bodies to react in all different ways. Science expert and biologist, Dan Riskin breaks down the science behind fear and how our brains are hardwired to react to danger. Watch the video clip to learn the different types of fear, including irrational fears, and why they have such a hold on us.