Can we cultivate germs? - Paul Ewald - TED-Ed

What this episode covers

View full lesson: http://ed.ted.com/lessons/can-we-domesticate-germs-paul-ewaldEvolutionary biologist Paul Ewald drags us into the sewer to discuss germs. Why are some more harmful than others? How could we make the harmful ones benign? Searching for answers, he examines a disgusting, fascinating case: diarrhea.Talk by Paul Ewald. Learn more about your ad choices. Visit megaphone.fm/adchoices

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How long is this episode of TED-Ed?

This episode is 21 minutes long.

When was this TED-Ed episode published?

This episode was published on May 28, 2026.

What is this episode about?

View full lesson: http://ed.ted.com/lessons/can-we-domesticate-germs-paul-ewaldEvolutionary biologist Paul Ewald drags us into the sewer to discuss germs. Why are some more harmful than others? How could we make the harmful ones benign? Searching...

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