Why do we cry? The three types of tears - Alex Gendler

Check out our Patreon page: https://www.patreon.com/teded

View full lesson: http://ed.ted.com/lessons/why-do-we-cry-the-three-types-of-tears-alex-gendler

Whether we cry during a sad movie, while chopping onions, or completely involuntarily, our eyes are constantly producing tears. Alex Gendler tracks a particularly watery day in the life of Iris (the iris) as she cycles through basal, reflex and emotional tears.

Lesson by Alex Gendler, animation by The Moving Company Animation Studio.

Видео Why do we cry? The three types of tears - Alex Gendler канала TED-Ed