The Science of Blushing [Video]

If you don't know why humans blush, don't be embarrassed: just watch this video. You might be able to guess that it's to do with increased blood flow in the face—but even scientists are still a little puzzled by its evolutionary basis. More »

Source: http://feeds.gawker.com/~r/gizmodo/full/~3/HUqWlsb5mRA/the-science-of-blushing

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