Sometimes, when friends casually mention obscure facts, it's inexplicably impressive! On one hand, you wonder how they even know such things, and on the other hand, you think this person must be eccentric! But in a way that's endearingly quirky. Today, I'm going to share some lesser-known facts with you, so you too can become someone everyone admires!

1. What does "YKK" on the zipper stand for? The answer is "Yoshida Kogyo Kabushikigaisha".

2. If you dig a hole straight to the center of the earth and drop a book in, it will take 45 minutes to reach the bottom.

3. Russia's land area is larger than the entire planet Pluto!

4. The last mammoths in the world went extinct around 2000 BC, by which time the Egyptians had already built many pyramids.

5. Barbie's full name is Barbara Millicent Roberts.

6. The unicorn is Scotland's national animal.

7. Humans and bananas share 50% of their DNA.

8. In 1977, the first Star Wars movie (the four-part series: A New Dawn) was released, at a time when the guillotine was still in use in some parts of France.

9. Tyrannosaurus Rex appeared approximately 67 million years ago, while Stegosaurus appeared in the Late Jurassic period, about 155 million years ago. It can be seen that the time gap between Stegosaurus and humans is much longer than that between Tyrannosaurus Rex and humans.

10. From the time you begin reading this article until now, the number of photographs taken by humankind has exceeded the total number taken throughout the entire 19th century.