In 'Devil in a Blue (or White) Dress' Raj, Jono and Joe examine the controversy over the blue or white dress. In this clip, Joe asks how the human eye evolved to see color. Is it really true that we can see things better than other animals against green backdrops?
Check out the full episode here:
http://www.dailymotion.com/video/x2ilicg_universe-city-devil-in-a-blue-or-white-dress-full-episode_fun
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