Harrison's dentist explains how cavities are formed and what to do to prevent them.
Harrison conducts an experiment to find out what will happen to eggshells (and teeth) when exposed to juice, vinegar, or cola.
Soft bodied invertebrates have no bones or major hard parts, which gives them some big advantages.
Many of the earth's scariest creatures are actually just trying to survive.
Meghan Trainor and Tenacious D compete in a series of experiments and illusions to break down how the brain works. Hosted by Keegan-Michael Key.
Lee explains how touch screens on smartphones work. Try some experiments to see what kind of objects can swipe on a touch screen and what kind of objects cannot. What did you discover?