- New York contains 920km (571miles) of shoreline.
- The word denim comes from 'de Nimes' or from Nimes which is a town in France.
- Minus 40C is exactly the same temperature as minus 40F.
- Chinese mathematics developed around the 11th century BC and included important concepts related to negative numbers, decimals, algebra and geometry..
- Birds need gravity to swallow.
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