The air you're breathing right now? Mostly useless nitrogen. But dig just a little deeper, and the chemistry gets genuinely ...

Discover how magnets work and the invisible magnetic force that attracts metal objects! Learn about magnetic fields, north and south poles, attraction, repulsion, and how magnets are used in everyday ...

An image with three panels, all tinted green. In one panel, a woman wearing protective clothing, goggles, gloves, and hair covering holds a clipboard in one arm and reaches with the other toward a ...