- A blue whale can weigh as much as 30 elephants and as long as 3 large tour buses.
- Swiss mathematician Leonhard Euler was probably the most influential mathematician of the 18th century, making discoveries in graph theory and introducing many modern mathematical words and notations among other things..
- 45% of people use mouthwash daily.
- A dragonfly can fly at 40kph (25mph).
- The odds of being struck by lightning are 600,000 to 1.
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