- More people are allergic to cows milk than any other food.
- That in the 17th century the value of pi was known to 35 decimal places (today to 1.2411 trillion).
- Rhinoceros have 3 toes on each foot.
- 8% of people have an extra rib.
- Rainbows can only be seen in the morning or late afternoon (the sun needs to be less than 40 above the horizon).
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