1. **Number of ants on Earth:** The total weight of ants worldwide is equivalent to the total weight of humans, approximately 10,000 trillion ants.

2. **Ocean Depth**: Humans have explored less than 5% of the ocean, and only about 10% of the estimated total marine life is known.

3. **Banana genes:** Modern bananas are almost all clones with identical genes, making them susceptible to disease.

4. **Perception of Time**: Astronauts perceive time as slower in space because they orbit the Earth at high speeds, experiencing "time dilation".

5. **Earth's Gold**: Most of Earth's gold came from meteorite impacts billions of years ago. There is also a large amount of gold in the Earth's core, but it cannot be mined.

6. **Human DNA:** Humans share about 50% of their DNA with bananas and have a 98.8% similarity to chimpanzees.

7. **Freshwater in Icebergs:** About 70% of the world's freshwater is stored in the Antarctic ice sheet. If it were to melt completely, sea levels would rise by 60 meters.

8. **The Silence of the Universe:** No sound travels in space because there is no medium; even an explosion would be completely silent.

9. **Earth's rotation:** The Earth's rotation speed is gradually slowing down, increasing the day length by approximately 1.4 milliseconds every 100 years.

10. **Human Bacteria**: The number of bacteria in the human body is 10 times the number of human cells, and these microorganisms are essential for health.