Piperine is the compound that gives black pepper its heat by activating your pain receptors. Here's how it works and why fresh-ground pepper packs a bigger punch.
Color filters work by selectively transmitting or blocking certain wavelengths of light. Learn how they're used in cameras, screens, microscopes, and more.
Laminaria is a seaweed used in food, industry, and medicine. Learn how it works as a cervical dilator and what its iodine content means for your thyroid.