- Wheat is the world's most widely grown plant.
- Turnips turn green when sunburnt.
- Babylonians measured the circumference of a circle as approximately 3 times the diameter, which is fairly close to today's measurement which uses the value of Pi (around 3.14)..
- The D.C. in Washington D.C. stands for District of Columbia.
- Mosquitoes dislike citronella because it irritates their feet.
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