- A rainbow can only be seen in the morning or late afternoon.
- That in the 17th century the value of pi was known to 35 decimal places (today to 1.2411 trillion).
- Humans are the only primates that don't have pigment in the palms of their hands.
- Norway once knighted a penguin.
- A duck has three eyelids.
- The Great Wall of China is approximately 6,430 Km long (3,995 miles).
- Dolphin's can detect underwater sounds from 24 km (15 miles) away.
- A squid has 10 tentacles.
- The tongue is the fastest healing part of a human body.
- On the average there are 8 peas in a pod.
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