Human bone us as strong as granite in supporting weight. A block of the size of a matchbox can support 9 tones –four times as much as concrete
The average person in the west eats 50tonnes of food and drinks 50,000 liters (11,000 gallons) of the liquid during his life.
Each finger and toenail takes about six months to grow from its base to the tip.
Humans and monkeys are the only mammals, which can differentiate different colors.
Bamboo is a kind of grass.
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