- A full moon is 9 times brighter than a half moon.
- More people are killed by hippopotamuses then by lions, elephants and water buffalos combined.
- The equals sign (=) was invented in 1557 by a Welsh mathematician named Robert Recorde..
- The Eifel Tower has 2,500,000 rivets.
- The Taj Mahal in India is made entirely out of marble.
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