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Why we blush

You just experienced the most excruciatingly embarrassing moment, and to top it all off, your face just turned bright red! What exactly is the function of blushing, other than to bring your embarrassment to a new level? What is the evolutionary reason behind this apparently uniquely human phenomenon? Is it the visible talk of shame and another reason why we have colour vision?

Definitely one for Mark Changizi ;-)

Freelance science journalist for 0.25 centuries. Author of the amazon bestseller Deceived Wisdom. Sharp-shooting photographer and wannabe rock god.