#21 This right here is Vincent van Gogh's painting palette:
 
                
                
                
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                #22 This is what first class on a plane in 1960 looked like:
 
                
                
                
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                #23 This is Robert Wadlow, the tallest man who ever lived:
 
                
                
                
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                #24 And this is Pauline Musters, the shortest woman ever to live:
 
                
                
                
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                #25 This is what the end of 13,000 miles of the Great Wall of China looks like:
 
                
                
                
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                #26 This painting by Leonardo da Vinci is the most expensive painting ever sold:
 
                
                
                
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                #27 This, wicker chairs and all, is what the interior of a plane looked like in 1925:
 
                
                
                
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                #28 In 1955, it cost $4.75 to go on 10 rides at Disneyland:
 
                
                
                
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                #29 This is the violin Wallace Hartley, bandleader on the Titanic, played as the ship sank:
 
                
                
                
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                #30 This monument to the doomed Donner Party shows just how deep the snow the unfortunate travelers had to deal with was:
 
                
                
                
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                #31 This is the world's oldest surviving photograph, taken by Nicphore Nipce in 1827:
 
                
                
                
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                #32 Here's what the original, un-enhanced world's oldest picture looks like today:
 
                
                
                
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                #33 The presidents on Mount Rushmore were originally planned to look like this:
 
                
                
                
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                #34 This is what a 3-year-old Albert Einstein looked like:
 
                
                
                
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                #35 This is what the iceberg that sank the Titanic looked like after being hit:
 
                
                
                
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                #36 This is what the Mayan temple at Chichen Itza looked like before it was restored:
 
                
                
                
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                #37 And this is what it looks like today:
 
                
                
                
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                #38 This is Ham the chimpanzee, the first ape launched into space:
 
                
                
                
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                #39 This pointy thing is what a nuclear bomb actually looks like:
 
                
                
                
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                #40 In 1962, three men escaped Alcatraz Island prison after fooling guards with papier-mch decoy heads that looked like this:
 
                
                
                
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