In the modern day, mirrors are just about everywhere. But that wasn't always the case, and the mirror actually has a ...

Some of the earliest human-made mirrors, fashioned from polished obsidian, date to 6200 B.C. in Turkey. Egyptians later made mirrors of polished copper, and Chinese inventors from reflective jade.

Researchers have determined that an obsidian mirror believed to have been owned by the sixteenth-century English polymath John Dee originated in the Aztec world. Dee served as a scientific adviser ...