How much of 'us' is really 'us?'

• Some time around 1683, amateur Dutch scientist Antonie van Leeuwenhoek scraped the plaque from between his teeth and peered at it through a home-made microscope.

Article Summaries:

• Some time around 1683, amateur Dutch scientist Antonie van Leeuwenhoek scraped the plaque from between his teeth and peered at it through a home-made microscope.

Sources:

• https://phys.org/news/2026-02-how-much-of-is-really.html