Animal Eyes

The earliest known precursor of sunglasses was invented in prehistoric times by the Inuit. They made snow goggles out of walrus ivory that had two narrow slits that reduced the wearer’s exposure to sunlight and protected them from going snow-blind.

Cocoa was often used for ceremonial occasions like weddings. It was brewed in both Mexican and Aztec culture, but the result was not at all similar to today’s hot chocolate as it was a far more bitter affair.

Between the 1590s and 1660s, the optical microscope was developed by Zacharias, Hans Jensen and Anton van Leeuwenhowek, among others. Anton van Leeuwenhoek used the simple compound microscope to observe bacteria in droplets of water!