Today November 7, 2011 is the birthday of Marie Curie an physicist/chemist pioneering the research about radioactivity. She also got a 2 Nobel Prize Award in the field of Physics and Chemistry. She was born on Warsaw, Poland and died in aplastic anemia due to her exposure on radiation.
Google celebrated the birth of Marie Curie and dedicate a Doodle for it.
Read more about Marie Curie at Wikipedia.org (http://en.wikipedia.org/wiki/Marie_Curie)