Louis Pasteur was born in 1822 in France. He had a successful career as a chemist and professor, making several important scientific discoveries around microbiology. Some of his key discoveries included proving that fermentation is caused by microorganisms, discovering that microorganisms can be both aerobic and anaerobic, and developing the process of pasteurization. Late in his career, he developed the first vaccines against rabies and cholera, saving many lives and establishing the field of vaccination. He died in 1895 and was buried at the Pasteur Institute in Paris.