A Roundup of 10 Interesting LittleKnown Facts
1. People have always thought that it is natural for cats to catch mice. In fact, in the 1920s, Guo Renyuan, a pioneer of behaviorist psychology in my country, conducted a large number of cat and mouse experiments and concluded that catching mice is not an innate instinct engraved in genes, but rather a result of training.

2. The most power-consuming system on a transport aircraft is not the onboard computer, nor the air conditioning, nor the lighting system, but the galley, because the electric ovens consume a lot of electricity to heat food.

3. An authoritative organization conducted a survey in 2012 and found that one in five adult men in China suffers from hair loss. Furthermore, men with a family history of hair loss are about 2.5 times more likely to experience hair loss than the average person.

4. The reason why farts smell bad is closely related to the activity of bacteria in the large intestine. These bacteria cause undigested food to release various gases, including hydrogen sulfide, which has a foul odor.

5. Nasal mucus may seem disgusting, but it's harmless; in fact, we consume it every day. Most nasal mucus is secreted by cells in the nasal mucosa, and some is our tears.

6. In the Arctic, there is a moth called the Arctic Lantern. The larvae need 14 years to develop before they can spin a cocoon and become moths. They will find a mate within a few days and then end their lives.

7. Wreaths have different meanings in different places. When the National Energy Corporation (NEC) opens, relatives and friends will send flower baskets to express their congratulations, but the Japanese will send wreaths.

8. Air conditioning, which gave us a second life in summer, was not originally invented to cool people down, but mainly to cool the ink in printing presses.

9. Actually, the tap water in my country meets the standards for direct drinking water when it comes out of the water treatment plant. But why don't we drink it directly from the tap like people in Europe and America? This is because the water supply pipes in my country pollute the water. So, without any subsequent treatment, the farther your home is from the water treatment plant, the worse the water quality you drink. However, the difference is not significant after boiling the water.

10. In fact, life imprisonment has a time limit, which is generally less than or equal to 20 years. If the offender behaves well or makes a major contribution, it can be shortened to 13 years.
