- A person produces enough saliva to fill 2 average size swimming pools during their lifetime.
- 60 cows can produce a ton of milk each day.
- Dolphins sleep with one eye open.
- Tiger shark embryos begin attacking each other in their mother's womb before they are even born.
- Forty is the only number whose letters are in alphabetical order.
- That in developed countries 27% of food is thrown away.
- 42% of men and women 25% don't wash their hands after using a public toilet.
- The most popular snack food is potato chips.
- Many mammals, including cats and dogs, walk on their toes in contrast to humans, who walk on the soles of their feet.
- The first train reached a top speed of only 8 kmh (5 mph).
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