Adjust the colors to reduce glare and give your eyes a break. Use one of the services below to sign in to PBS: You've just tried to add this video to My List. But first, we need you to sign in to PBS ...

Matter is anything that takes up space, such as air, trees, bugs, even people. Typically, matter is categorized under three different categories: solids, liquids, and gases. Oobleck, which gets it's ...

Oobleck is a non-Newtonian fluid, which is a fancy term for a liquid whose viscosity varies with pressure. Is it a rock? Is it a liquid or solid? It’s both! Making your own oobleck is a simple, ...