- Less than 3% of the water on Earth is fresh.
- Dolphins are part of the whale family.
- You can tell a turtle's gender by the noise it makes. Males grunt and females hiss.
- 1 square inch of human skin contains 625 sweat glands.
- Your fingernails grow faster when you are cold.
- Koalas sleep around 18 hours a day.
- The Greek national anthem has 158 verses.
- The largest exporter of sugar is Cuba.
- The Great Wall of China is approximately 6,430 Km long (3,995 miles).
- Only pregnant females polar bears hibernate.
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