Born as Marya Sklodowska, on November 7, 1867 in Warsaw, Poland, during the Russian occupation. Both her parents were teachers, and didn't make much money at it.
Eventually she grew up, and became a tutor herself. She helped pay her sister Bronia's way through medical school in Paris. In 1891 Marie also traveled to Paris to study physics, and after achieving a degree in that, went on to get one in mathematics. Around this time she met Pierre Curie, who in 1895 reduced her last name by 5 letters, all of them consonants.
In 1879 she decided to go for a physics doctorate. In doing so she came across the work of Henri Becquerel, who had found that uranium salt left an impression on a photographic plate even when inside it's protective envelope. Marie and Pierre were able to show that this happening was not a result of a chemical process, but a property of the element. She created the word Radioactive to describe this phenomenon, and found some other radioactive substances, such as thorium, polonium and radium.
The Curies were poor, but didn't file for patents on their work that would have solved their money problems, for idealistic reasons. (Science is for everyone, and all that).
They won a Nobel prize in 1903 for discovering natural radioactivity in radium and polonium. (in recognition of the extraordinary services they have rendered by their joint researches on the radiation phenomena discovered by Professor Henri Becquerel.) This discovery was also good enough to get her that doctorate she had been working for.
Three years later, in 1906, Pierre was hit by a horse-drawn wagon, and died. Marie was left with two children (Irene Curie (9) and Eve Curie (2)). She took over her husband's teaching position at Sorbonne university, becoming the first woman to be a professor at that school. She also home schooled her kids.
In 1911 she won another Nobel prize for her work with radium, including determining its atomic weight. (in recognition of her services to the advancement of chemistry by the discovery of the elements radium and polonium, by the isolation of radium and the study of the nature and compounds of this remarkable element.) This Nobel prize was despite the fact that she was a woman (bad), and was having an affair with a married man (very bad).
She helped found the Radium Institute, and became its first director -- But in 1914 WWI broke out, and Marie went out into the field to operate a fleet of radiological ambulances (I always wanted to use that phrase) so that the wounded could have the benefit of X-rays. The Allies won the war, so she went back to her institute, where she and Claudius Regaud worked on treating cancer with radioactive materials (unfortunately, these materials had recently become much more expensive). In 1921 Marie took a trip to America, where President Warren G. Harding gave her a gift of a gram of radium. (This was a big deal. Radium isn't easy to come by).
On July 6, 1934, she died of plastic anemia, probably the result of long exposure to ionizing radiation. Her ashes, along with those of her husband, now lie under the dome of the Panthéon, in Paris.
Her daughter Irène continued her work, and she and her husband Frédéric Joliot would win a Nobel prize for their work in discovering artificial radioactivity. (At the time of the Nobel Prize, she was Irène Joliot-Curie).
http://inst.augie.edu/~jkbjerga/histochem2.html is great, despite the typos.
She was agnostic.
http://www.france.diplomatie.fr/label_france/ENGLISH/SCIENCES/CURIE/marie.html Is mostly what I used.
http://www.iomp.org/newsletter/v15n1/p9.html is really good.
World book (1985) was little use.