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Why we cry? Why we blush? [Biology]
posted April 30 2013 19:47.26 by Giorgos Lazaridis

There are different types of tears - Most strange being those caused by sadness. This is a situation that we -humans- can only experience. Animals may cry too, but not because they are sad. But, why do we shed tears of sadness? Watch the following video:

Bonus video: Why we blush? Actually its not a bonus video, its a relevant video also found as an annotation in the previous one :D

[Link: AsapSCIENCE]

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