Births
1622 - Vincenzo Viviani, Italian mathematician
1827 - Joseph Lister, English surgeon
1869 - Sergei Chaplygin, Russian physicist and engineer
1929 - Ivar Giaever, Norwegian physicist, Nobel laureate
Deaths
1900 - Joseph Louis François Bertrand, French mathematician
1967 - Hermann Joseph Muller, American geneticist, Nobel laureate
1970 - Alfred Henry Sturtevant, American geneticist
1979 - Eugène Gabritschevsky, Russian biologist and artist
2004 - Heiner Zieschang, German mathematician
More like this
Events
1989 - The first ring of Neptune is discovered.
tags: birds, mystery bird, bird ID quiz
Joseph over at Immunoblogging has two posts on Mycobacterium bovis and gives a potential answer to Dave S.'s questi
So what are these?