Nylon was patented on February 16, 1937 by Wallace Carothers. Almost exactly one year later, it hit the shelves in the form of toothbrush bristles. In the intervening years, it has been used for packaging food, building car engines, clothing, fishing line, 3D printing… it even went to the moon! But just what is this
Puns abound in our Valentine’s day video, but we’re not about to let a holiday get in the way of talking about cool science! These cool color changes are brought about by chemistry, specifically by a little number known as pH. While it is pretty common knowledge that this number indicates how acidic something is,
An atom consists of three types of building blocks: protons, neutrons, and electrons. Protons and neutrons stick together in the center, or nucleus, of the atom, while electrons whiz around the outside at breakneck speed. The parts of an atom are incredibly tiny and surprisingly spread out. Let’s consider the simplest element of them all:
You’ve probably heard a lot about this year’s El Niño, which is predicted to be the biggest since 1998. What exactly does that mean? This global weather phenomenon has complex and far-reaching consequences, but the mechanism behind it is simple! Let’s start by considering normal weather patterns in the Pacific ocean. Water near the surface
Every step you take is a tiny study in rocket science! Lift one foot and push backwards on the floor with the other. The floor exerts an equal and opposite (forward) force on the planted foot, and your body moves ahead. Equal and opposite force pairs are everywhere. Stand on an ice rink and push
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