Antoni van Leeuwenhoek

How Antoni van Leeuwenhoek discovered bacteria in the 1670s-Today's Google Doodle celebrates the 384th birthday of Dutch tradesman Antoni van Leeuwenhoek, the first human to observe microbes. You can see his fascinating story in our video above, recounted by Ed Yong, author of I Contain Multitudes: The Microbes Within us and a Grander View of Life.