- The expression to 'knuckle down' originated from playing marbles (players used to put their knuckles to the ground for their best shots).
- A dragonfly can fly at 40kph (25mph).
- The ideal temperature to fall asleep is between 18-30c (64-86f).
- A chameleons tongue is twice the length of its body.
- Women blink twice as much as men.
- The first flight traveled at less than 7 mph (ground speed).
- The water in the Dead Sea is so salty that its easier to float than sink.
- Coffee is the most popular beverage worldwide with over 400 billion cups consumed each year.
- Bali has the worlds largest variety of flora.
- Hawaii is the only US state that grows coffee.
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