Why do your ears hurt more and more as you go deeper and deeper underwater? What makes nails so easy to hammer into a wall? Well, pressure explains these questions and many more. In this episode, Elijah will share with you what pressure is, why it's important, and why your ears hurt as you do deeper underwater, as well as why it's so easy to hammer a nail into a wall.  Pressure is an amazing thing. Play this episode now to find out just how amazing and important pressure is!