By Jean Elizabeth Seah, Aleteia - If you enjoyed a glass of pasteurized milk this morning at breakfast, thank Louis Pasteur for discovering how to preserve milk so that it did not kill you with tuberculosis, diphtheria, scarlet fever or another nasty disease... Louis Jean Pasteur was born in eastern France, the third child of a poor tanner, Jean-Joseph Pasteur, and his wife Jeanne-Etiennette Roqui. He came from a long line of peasants, and was only an average student,