- Halley's comet passes the Earth every 76 years (the next time it will return will be 2062).
- Ichthyophobia is the fear of fish.
- Blonde beards grow faster than darker beards.
- The grapefruit gets its name from the way it grows in clusters like grapes on a vine.
- Triscadecaphobia is the fear of the number 13.
- Astronauts can't burp in space.
- Sharks can sense a drop of blood from 4km (2.5miles) away.
- An ostrich's eye is bigger than its brain.
- A bowling pin will fall at a tilt of 7.5 degrees.
- More people are killed by hippopotamuses then by lions, elephants and water buffalos combined.
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