In the Season 3 premiere, Nick takes a deep dive into what actually happens inside your body when you get a tattoo. Think it's just ink being injected into your skin? Think again! There's a wild, desperate battle raging just beneath your epidermis that plays a bigger part in getting a tattoo than you can imagine. Then, Dave updates us on the search for extraterrestrial life. With the discovery of distant worlds that have liquid water on or below the surface, exobiologists believe there's more...