- There are over 690 known species of bats.
- Green tea has 50% more vitamin C than black tea.
- Akousticophobia is the fear of noises.
- The 'black box' that houses an airplanes voice recorder is actually orange so it can be more easily detected amid the debris of a plane crash.
- Sailors once thought wearing gold earrings improved eyesight.
- Koalas and humans are the only animals with unique fingerprints.
- Oysters can change from one gender to another and back again.
- Not a single number has the letter "b" in it until you reach a billion.
- Coffee trees produce its first full crop after 5 years old.
- The Olympic flag was designed in 1913.
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