View full lesson: http://ed.ted.com/lessons/how-do-germs-spread-and-why-do-they-make-us-sick-yannay-khaikin-and-nicole-mideo Germs are found on almost every …
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How do germs spread (and why do they make us sick)? – Yannay Khaikin and Nicole Mideo
Published on July 29, 2016
