The video features a compilation of five interesting facts and stories.
1. The first fact is about tape measures, specifically why the tabs on tape measures often wobble. It's because the tab needs to move to compensate for the thickness of the tab itself when measuring inside or outside dimensions.
2. The second fact is about Hammerhead sharks and their unique head shape, which is partially due to their need for depth perception. The wide-set eyes of the Hammerhead shark allow for more overlap between the images from each eye, giving the shark better depth perception.
3. The third fact is about kidney transplants and how they work. The host explains that if his wife needed a kidney, he wouldn't be able to donate one to her because their children have his genes, and her immune system would reject his kidney. However, through the Kidney Exchange Program, he could donate his kidney to someone else, and in return, his wife could receive a compatible kidney from another donor.
4. The fourth fact is about the Earth's magnetic field and how the North Pole is actually the South Pole of the Earth's magnet. This is due to the way we define the poles of a magnet and how opposite poles attract.
5. The fifth fact is about a type of ant called the "turtle ant," which has a unique head shape that can be used as a door to block the entrance to its burrow.
The video ends with the host promoting his website, ninterestingthings.com, and his sponsor, Hostinger, which offers web hosting services.
Here are the key facts extracted from the text:
1. Tape measures have a wobbly tab to compensate for the thickness of the tab when measuring inside dimensions.
2. There are two ways to use a tape measure: to measure outside dimensions and to measure inside dimensions.
3. When measuring outside dimensions, the tab is hooked over the object and the tape measure is pulled back to reach the mark.
4. When measuring inside dimensions, the tab is pushed up against the inside surface of the object.
5. Calibration of tape measures is done for the inside face of the tab.
6. Hammerhead sharks have hammer-shaped heads that may be related to depth perception.
7. Binocular vision, which improves depth perception, is possible when there is overlap between the images coming from the two eyes.
8. The further apart the eyes are, the more accurately depth can be perceived.
9. Hammerhead sharks may move their heads side to side to improve the overlap of images from their eyes.
10. The Kidney Exchange Program allows individuals to donate a kidney to someone in need, even if they are not a compatible match for their loved one.
11. The program pairs individuals with others who have a compatible match, allowing for a kidney swap.
12. The North pole of the Earth's magnet is actually the South pole of the magnet.
13. The magnetic field of the Earth has its South pole at the top, where the North pole is.
14. Turtle ants have a soldier ant that grows a "door" on its head to guard the entrance to their burrow.
15. Oreos are vegan, but the speaker notes that this does not necessarily mean they are healthy.
16. The website ninterestingthings.com is a collection of interesting things, each with its own image.
17. The website is hosted by Hostinger, which offers two-factor authentication and the ability to deploy websites with Git.
18. Hostinger also offers one-click installation of WordPress and optimized servers for WordPress.