- the typewriter was invented in 1829
- the typical wave height from Pacific tsunami is between 6 - 9 metres
- the US flag has 13 stripes (representing the original 13 states)
- the US is the world's largest consumer of coffee
- the US produces 19% of the world's trash
- The US shreds 7,000 tons of worn out currency each year
- the vocabulary of the average person is between 5,000 to 6,000 words
- the water in the Dead Sea is so salty that its easier to float than sink
- the WD in WD-40 stands for Water Displacer
- the wheelbarrow is invented in China
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