- 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.
- There are over 100 different viruses that cause the common cold.
- Jellyfish can clone themselves.
- Ice skating rinks always go counter clock wise (for the majority of people that are right handed needing to hang onto the rail).
- Despite its hump, a camel has a straight spine.
- All insects have 6 legs.
- The diameter of Earth is 12,756 km (7,926 miles).
- The Earth weighs 6,588,000,000,000,000,000 tons.
- Ostriches have a powerful immune system.
- The Great Wall of China is approximately 6,430 Km long (3,995 miles).
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