Structured list :
As was done with the topic optical phenomenon I suggest the topic biological phenomenon from which numerous topics and links may be developed.
... 1890s - 1900s - 1910s 1920s 1930s 1940s 1950s Years: 1899 1900 1901 1902 1903 - 1904 - 1905 1906 1907 1908 1909 See also: 1904 in film 1904 in ...