- The compass and straight edge were powerful tools in the advancement of geometry, allowing the construction of various lengths, angles and geometric shapes..
- You can tell the sex of a horse by its teeth (most males have 40, females 36).
- Cheetahs can accelerate from 0 to 70 km/h (43mp/h) in 3 seconds.
- Laughing lowers levels of stress and strengthens your immune system.
- 2/3 of the world's eggplants are grown in the US New Jersey.
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