How a few scientists transformed the way we think about disease - Tien Nguyen

View full lesson: http://ed.ted.com/lessons/how-a-few-scientists-transformed-the-way-we-think-about-disease-tien-nguyen This video was created with support from the U.S. Office of Research Integrity: http://ori.hhs.gov. For several centuries, people though diseases were caused by wandering clouds of poisonous vapor. We now know that this theory is pretty ridiculous, and that diseases are caused by specific bacteria. But how did we get to this new idea of germ theory? Tien Nguyen describes the work of seve

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