- That in the 17th century the value of pi was known to 35 decimal places (today to 1.2411 trillion).
- Earth is the only planet not named after a god.
- A crocodile can't move its tongue.
- The world's knowledge is growing so fast that 90% of what we will know in 50 years time will be discovered in those 50 years.
- In Africa more people are killed by crocodiles than lions.
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