This video features five interesting facts and stories, presented in a compilation format.
1. Tape measure tabs wobble for a reason: they need to compensate for the thickness of the tab when measuring inside dimensions.
2. Hammerhead sharks have hammer-shaped heads to improve depth perception through binocular vision, with their wide-set eyes allowing them to detect prey more effectively.
3. A person who has had children with their partner cannot donate a kidney to them due to genetic incompatibility, but a kidney exchange program can help find a compatible donor.
4. The North Pole is actually the South Pole of the Earth's magnetic field, due to the way we define magnetic poles.
5. A type of turtle has a "door" on its head that it uses to guard its burrow, an example of a defense mechanism called "Frank Moses."
The video also promotes a website, ninterestingthings.com, where viewers can find more interesting facts and stories.
Here are the key facts extracted from the text:
1. Tape measures have a tab that can wobble, which is designed to compensate for the thickness of the tab when measuring inside dimensions.
2. There are two ways to use a tape measure: to measure the outside dimension of something or the inside dimension of something.
3. When measuring the outside dimension, the tab is hooked over the object and the tape is pulled back to reach the mark.
4. When measuring the inside dimension, the tab is pushed up against the inside surface of the object.
5. Hammerhead sharks have a unique head shape that is thought to be related to their ability to perceive depth.
6. The hammerhead shark's eyes are on the sides of its head, but they are still able to overlap, allowing for binocular vision.
7. Binocular vision allows animals to perceive depth and distance.
8. The further apart an animal's eyes are, the more accurately it can perceive depth.
9. Hammerhead sharks may move their heads side-to-side to improve the overlap of their eyes and enhance their depth perception.
10. When a woman gives birth to a child, her body is exposed to proteins that her body doesn't produce, which can cause her immune system to recognize those proteins as foreign.
11. If a woman's partner tries to donate a kidney to her, her immune system may reject it because it recognizes the proteins on the kidney as foreign.
12. The kidney exchange program allows couples to swap kidneys with another couple, ensuring that each person receives a compatible kidney.
13. The Earth's magnetic field has its South Pole at the top, where the North Pole is.
14. The North Pole of a magnet is attracted to the South Pole of another magnet.
15. The Oreos are vegan.
16. The Chinese hourglass spider uses its abdomen to block the entrance to its burrow as a form of defense.
17. Tree-dwelling hands (a type of ant) cut out a circular entrance to their burrow and guard it with their heads.
18. Some animals use their bodies to block the entrance to their burrows as a form of defense, known as "Frank Moses."
19. The creator of the video has set up a website to track interesting things, which can be searched outside of the YouTube ecosystem.