- Diamonds mined in Brazil are much harder than those found in Africa.
- The world's smallest mammal is the bumblebee bat of Thailand.
- The oldest word in the English language is 'town'.
- 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.
- Police dogs are trained to respond to commands in foreign languages (usually German or Hungarian).
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