- Humans shed and regrow outer skin cells every 27 days (almost 1,000 new skins in a lifetime).
- A woodpecker can peck 20 times a second.
- It is believed that Ancient Egyptians used complex mathematics such as algebra, arithmetic and geometry as far back as 3000 BC, such as equations to approximate the area of circles..
- Catfish have over 100,000 taste buds.
- The Grand Canyon can hold around 900 trillion footballs.
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