People with blue eyes don't actually have any blue pigment. It's actually lack of melanin that causes light to scatter in your eyes, creating an illusion of a blue hue. This is called the Tyndall effect. MASHABLE ON YOUTUBE Subscribe to Mashable: http://on.mash.to/subscribe Best of playlist: https://on.mash.to/BestOf MASHABLE ACROSS THE WEB Mashable.com: http://on.mash.to/1hCcRpl Facebook: http://on.mash.to/1KkCTIP Twitter: http://on.mash.to/1Udp1kz Tumblr: http://on.mash.to/1NBBijY Instagram: http://on.mash.to/1U6D40z Google+: http://on.mash.to/1i27L5R Mashable is a leading global media company that informs, inspires and entertains the digital generation.
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