- Halley's comet passes the Earth every 76 years (the next time it will return will be 2062).
- Mapping is older than writing.
- In 1878 the first telephone book made contained only 50 names.
- A bowling pin will fall at a tilt of 7.5 degrees.
- The equals sign (=) was invented in 1557 by a Welsh mathematician named Robert Recorde..
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