Sep 17, 1683
Dutch scientist Antonie van Leeuwenhoek (列文虎克) declared his discovery of microorganisms to the Royal Society in London.
Today is
International Country Music Day
Did you know what is the No.1 country song of all time?
It's "I Walk the Line" by Johnny Cash.
Sep 17, 1994
Karl Popper (卡尔·波普尔), the Austrian-born British philosopher of natural and social science, died at age 92.