- Brazil got its name from the Brazilian nut (not the other way around).
- The past tense for the English word 'dare' is 'durst'.
- Petrol has no specific freezing point (it can freezes at any temperature between -82 and -115C (-180 and -240F).
- The softest known mineral is talc.
- Halley's comet passes the Earth every 76 years (the next time it will return will be 2062).
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