Lots More InformationRelated HowStuffWorks Articles
- How Light Works
- How Lasers Work
- What is the difference between a fluorescent light and a neon light?
- How does glow-in-the-dark stuff work?
- How far does ultraviolet light penetrate into the body?
We love it. We wear it glittering around our necks and sparkling at our ears, wrists and feet. We pass it down to our children and hoard it in secret stashes. Why is this precious metal so prized?
If a drugstore is the equivalent of a 7-Eleven where you can pick up ready-made apple pie pockets, then a compounding pharmacy is your corner bakery where an individual tart is made just for you. But are these specialized pharmacies safe?