- Halley's comet passes the Earth every 76 years (the next time it will return will be 2062).
- A rat can tread water for 3 days.
- Here is Pi written to 100 decimal places:
3.1415926535897932384626433832795028841971693993751
058209749445923078164062862089986280348253421170679.
- That you burn more calories eating celery than it contains (the more you eat the thinner you become).
- The Empire State Building in New York weighs over 365,000 tons.
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