- Each red blood cell lives an average of 4 months and travels between the lungs and other tissue 75,000 times before returning to bone marrow to die.
- DFW Airport in Texas is larger than the island of Manhattan.
- All of the cobble stones used to line the streets in New York were originally stones found in the hulls of Belgian ships ballast.
- Crocodiles swallow rocks to help them dive deeper.
- Greek philosopher and mathematician Pythagoras lived around the year 500 BC and is known for his Pythagorean theorem relating to the three sides of a right angle triangle: a^2 + b^2 = c^2.
- New York contains 920km (571miles) of shoreline.
- Plants, like humans, can run a fever if they are sick.
- It is illegal to run out of gas in Youngstown, Ohio.
- China manufacturers 70% of the worlds toys.
- The Bee Hummingbird weighs less than a penny.
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