Here are some interesting facts:
- The Great Wall of China is the longest wall in the world, stretching over 13,000 miles.
- A blue whale's heart is as big as a small car and can weigh over 1,000 pounds.
- The human nose can detect over 1 trillion different scents.
- The shortest war in history lasted only 38 minutes, between Britain and Zanzibar in 1896.
- The Eiffel Tower was originally built as the entrance arch to the 1889 World's Fair.
- The moon is actually moving away from Earth at a rate of approximately 1.5 inches per year.
- Chocolate was once used as currency by the Aztecs.
- The average person will spend six months of their life waiting for red lights to turn green.
- The world's largest pyramid is not in Egypt, but in Mexico.
- Humans and giraffes have the same number of neck vertebrae, 7.
