- The hydrochloric acid found in your stomach is strong enough to dissolve a nail.
- Blue whale tongues can weigh 8,000 pounds, or as much as an elephant, and their hearts weigh close to a ton.
- An average person will spend 25 years asleep.
- The average cow produces 40 glasses of milk a day.
- Salt used to be a currency.
- In Venus, it snows metal.
- It takes 50 minutes to soft boil and two hours to hard boil an ostrich egg.
- The coloured part of your eye is called the iris.
- The average person spends two weeks of their life waiting at traffic lights.
- Birds cannot live in space because they need gravity to be able to swallow.
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