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  • Vsauce! Kevin here.

  • Let's get inspired by Dairy, Eye, Hair, Sideburns.

  • There's evidence of humans making cheese dating back 7,500 years. Dairy herding goes back

  • 9,000 and it's believed our ancestors were lactose intolerant so they ate fermented foods

  • like yogurt and cheese which turn lactose into lactic acid. And it was also easier to

  • transport the protein-rich cheese curd than milk.

  • The idea that eating carrots improves eyesight is a myth originating from World War II. The

  • British developed a new radar system to shoot down German planes at night but they wanted

  • to keep it a secret so they created propaganda citing an excess of eating carrots by their

  • pilots as their reason for success. Carrots do have beta carotene which converts to Vitamin

  • A - a lack of which could lead to health problems but any well-rounded diet will supply enough

  • Vitamin A.

  • People started wearing powdered wigs because of syphilis. There was an epidemic in Europe

  • and patchy hair loss was one of the symptoms so the wigs were needed to cover up the rampant

  • baldness. The powder was scented with orange and lavender to cover the odor of the accompanying

  • sores and rashes. Soon after, King Louis XIV and King Charles II wore them to cover their

  • thinning hair and they started a trend that spread throughout the aristocracy with the

  • term "bigwig" coming from those who could afford the biggest most elaborate wigs.

  • Having facial hair on the side of the face has been around since at least 100 BC and

  • we know this thanks to a mosaic featuring Alexander The Great sporting the style but

  • the name sideburns comes from a U.S. Civil War General - Ambrose Burnside. He had facial

  • hair across his cheeks that connected to his mustache and it became known as burnsides.

  • Sideburns came into style a few years later by shaving the mustache leaving you with just

  • the burns on the side.

  • Now if we take out the air like this, the ey, s and burns what we're left with is Dye

  • and Hide.

  • An Easter Egg tradition. Humans have been decorating eggs for millennia with engraved

  • ostrich eggs discovered in Africa going back 60,000 years. Christians of Mesopotamia stained

  • eggs red in tribute to the blood of Christ and the egg itself represents the resurrection

  • of the Lord. But modern adults rank red as the least popular color with their favorite

  • being blue.

  • And as always - thanks for watching.

Vsauce! Kevin here.

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我們為什麼要染復活節彩蛋?-- 思想玻璃 #2 (Why Do We Dye Easter Eggs? -- Thought Glass #2)

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