In this video segment from Cyberchase, two friends make rock candy while learning about 2-D and 3-D shapes.

Learn about the crystal patterns and shapes of select minerals (diamond, quartz, muscovite, and topaz) and how to grow your own rock candy crystals.

Working to reduce the illicit drugs in America, this is the website of Partnership For A Drug Free America. This site contains a database of drugs with slang names as well as standard. For each drug there are descriptions of the drug...