Events
1831 - Charles Darwin is asked to travel on HMS Beagle.
2006 - The International Astronomical Union (IAU) redefines the term "planet" such that Pluto is no longer considered a planet.
Births
1899 - Albert Claude, Belgian biologist, Nobel laureate
1923 - Arthur Jensen, American hereditarian psychologist
1950 - Tim White, American physical anthropologist
Deaths
1595 - Thomas Digges, English astronomer
1664 - Maria Cunitz, Silesian astronomer
1888 - Rudolf Clausius, German physicist
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Today is the International Day for World Biodiversity, a favorite holiday of the Bush White House.
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