- 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.
- The film 'Mary Poppins' was filmed entirely indoors.
- The average bank teller loses $250 every year.
- Hippopotamuses have skin 3.8cm (1.5in) thick.
- Red light has the highest wavelength.
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