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Picture of Louis Pasteur
The Bettmann Archive. From painting by Edelfeld.

Louis Pasteur

Louis Pasteur was a French chemist who lived between 1822-1895. He described the scientific basis for fermentation, the process used to make beer and wine, showing that it is carried out by microorganisms, called germs. Pasteur learned that these germs are also responsible for spreading contagious diseases. He thus solved the mystery behind rabies and anthrax, and created vaccines for these and other deadly illnesses, saving many lives.

Pasteur also dispelled the myth of spontaneous generation, proving that all life must come from pre-existing life.


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Ready, Set, SCIENCE!: Putting Research to Work in K-8 Science Classrooms

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Life on Earth

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Scientists Who Studied Life

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Charles Darwin

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Christian Doppler

Christian Doppler was an Austrian mathematician who lived between 1803-1853. He is known for the principle he first proposed in Concerning the coloured light of double stars in 1842. This principle is...more

Ben Franklin

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Edmond Halley

Edmond Halley was an English astronomer who lived between 1656-1742. Using historical records, his own observations, and Newton's universal law of gravitation, he reasoned that the comets which had appeared...more

William Herschel

William Herschel was born in Germany and lived in England while he worked as an astronomer. He lived between 1738-1822. He built reflecting telescopes of high magnification, that let him observe the universe...more

Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part by the National Science Foundation and NASA, our Founding Partners (the American Geophysical Union and American Geosciences Institute) as well as through Institutional, Contributing, and Affiliate Partners, individual memberships and generous donors. Thank you for your support! NASA AGU AGI NSF