Big History Quiz

Here’s Jamin Warren on the game: “It’s created a kind of global arcade. Instead of a few kids looking over the shoulder of the hot-shot older brother or whatever, down at the mall, you have millions of people watching, and the person playing the game is a millionaire.”

Toucans are among the world’s noisiest birds. Their singing sounds like frogs croaking, and they can also make an array of tapping and clattering noises with their bills. Some toucan species can even bark, growl and make braying sounds like a donkey.

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!