Bacteria were first reported on September 17, 1683, by Dutch scientist Antonie van Leeuwenhoek, who had observed single-cell organisms in human dental plaque. CBS Sunday Morning tells the story and ...

Van Leeuwenhoek's own interest in lensmaking stemmed from his desire to more clearly see the quality of the thread he used in his draper business, and when he learned of the wonders of microscopy ...