Celadon pottery gets its soft green color from iron oxide in the glaze. Here's the chemistry behind the color and the history of this ancient ceramic tradition.
IR cameras detect heat instead of light to create thermal images. Learn how they work and where they're used, from building inspections to smartphones.
Domestic wells supply millions of homes with water, but they come with real responsibilities. Learn how they work, what can go wrong, and how to keep your water safe.