1. Machu Picchu was built around 1450 CE, less than 50 years before Christopher Columbus sailed to the New World.
  2. Empty Homes Outnumber The Homeless 6 To 1 in The U.S.
  3. Scientists can identify individual zebras by "scanning" their stripes like a barcode.
  4. The world's oldest university in continuous operation is in Africa: the University of Karueein, founded in 859 AD in Morocco.
  5. Scientists can locate colonies of Penguins from space just by looking for dark ice patches of penguin poop.
  6. Worldwide, around one quarter of pregnancies end in abortion. Nearly half are illegal.
  7. Almost four hundred billion trees
    belonging to 16,000 different species grow in the Amazon rainforest.
  8. Joe Ranft, co-writer and co-director on the film "Cars," died in a car accident while the movie was still in production.
  9. The extreme sport of "Volcano surfing" was invented in 2004 at Cerro Negro, Nicaragua.
  10. The skin of a female shark is much thicker than that of a male
    because males bite females during mating.
  11. The tuatara, a New Zealand reptile that pre-dates the dinosaurs, has three eyes.
  12. The 'de-militarized' zone between North and South Korea is the world's most militarized zone.
  13. Nearly 90 million children have spent their whole lives war zones, according to the UN.
  14. The average Bugatti customer has about 84 cars, 3 jets and one yacht.
  15. Due to its isolation from the European mainland, Ireland lacks several species common elsewhere in Europe, such as moles, weasels, polecats or roe deer.
  16. Although some individual zebras have been domesticated, most cannot. They are unpredictable and known to attack people.
  17. U.S. troops in Vietnam employed over 5,000 'war dogs'.
  18. In 1833, Britain used 40% of its national budget to buy freedom for all slaves in the Empire.
  19. Writer Agatha Christie was a keen surfer.
  20. A cat nicknamed "Unsinkable Sam" survived the sinking of three separate ships during WW2.
  21. September 3, 1967, was "Dagen H" day in Sweden: traffic switched from driving on the left-hand side of the road to the right.
  22. In 1930, Albert Einstein patented a fridge. It was not a commercial success.
  23. Mark Twain was born shortly after a visit by Halley's Comet and died the day after the comet returned.
  24. Around 5,000 people attempted to escape over the Berlin Wall, with an estimated death toll ranging from 136 to more than 200.
  25. In 2004, gay rights activists in Australia started a micronation in the Great Barrier Reef called the Gay and Lesbian Kingdom of the Coral Sea Islands.
  26. 1 in 5 employees would sell their work passwords for money, a survey found.
  27. Male giraffes determine if a female is fertile by tasting their urine.
  28. Obama was the first sitting U.S. president to visit Cuba in almost a century.
  29. Mexico City is the Most Traffic-Congested City in the World.
  30. Alien hand syndrome is a disorder that causes one's hand to move without being aware or having control over it.
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