1. More than 80% of the ocean has not yet been explored by humans, and the vastness is self-evident. However, we know more about the surface of Mars than the ocean.
2. About 70% of the oxygen on Earth comes from the ocean's algae, which is a surprising number. What is even more surprising is that the ocean is the real lung of the earth, and protecting the ocean is protecting ourselves.
3. In Europe in the 17th and 18th centuries, the underdevelopment of medical knowledge led to many incidents of suspended animation. What a heart-wrenching history it is that thousands of people lose their lives every year to being mistakenly buried, and "anti-live burial" coffins were designed to prevent similar mistakes from happening again. This coffin has a distress bell and breathing holes, and once the trapped person in the coffin wakes up, he can immediately call for help.
4. Philippine fruit bats are the largest bats in the world, with a wingspan of up to two meters, and they are a rare family of flying foxes that are endangered.
5. You may not know that snails are the animals with the most teeth in the world. Snails typically have more than 14,000 teeth, and some species of snails even have more than 20,000 teeth. These teeth, which are difficult to see with the naked eye, grow on the snail's tongue and are called "toothed tongues" and help snails cut and crush food.
6. When the flock of sheep and deer perceives a threat, they will adopt a unique means of defense - constantly walking in circles. This act is not a mystical ritual, but to protect pregnant females, cubs, and injured partners from predators.
7. Eating soil is indeed a real phenomenon. In Haiti, locals make a "mud biscuit" made from a mixture of earth, salt and fat. This mud biscuit is an emergency food when there is a severe lack of food, and the local poor will choose to eat this biscuit to fill their hunger.
8. In 1881, James Wilder, a signalman at the South African Railways Authority, was disabled in both legs as a result of an accident. To compensate for this shortcoming, he purchased and trained a baboon (Jack) to serve as his assistant. After confirming Jack's ability to work, the railroad officially hired the baboon and gave it a daily wage of $20 and half a bottle of beer a week. It is worth mentioning that Jack never made a single mistake in his working life (1881-1890).
9. Humpback whales have a spectacular way of predation, driving schools of fish or krill in groups, then spitting bubbles to form "bubble nets", and finally rushing out from below to eat their prey.
Before the atomic bombings of Hiroshima and Nagasaki, the United States had sent aircraft to drop tens of millions of leaflets warning the Japanese people of the impending atomic attack and urging them to surrender as soon as possible and leave the danger zone. However, the Japanese people did not heed these warnings and still lived an orderly life. The Japanese authorities also did not organize the evacuation, which resulted in a large number of casualties.
11. In Antarctica, you can experience the lowest air pressure on Earth. Due to the extremely low air pressure, your ears and nose will feel unbearable pain.
12. When you see people wearing masks, you may think they look better. This is because when we can only see half of the face, the brain will make up the facial contours that we do not see on our own, and the brain supplement process will automatically beautify the ideal appearance in our hearts. Therefore, we will have the feeling that people wearing masks are more beautiful.
13. Colds are not caused by cold weather, but by viruses. Cold weather can dull our immune system, and dry air can also dry out the mucous membrane of our nose, creating more favorable conditions for the virus to invade the human body.
14. We are able to smell a variety of odors because olfactory receptor cells in the nose are able to detect and respond to airborne molecules. When you smell an unpleasant smell in the toilet, it means that there is a substance in the air that can be detected by olfactory receptors.
15. Approximately 8% of the human genome comes from viruses, and these genes, known as "human endogenous retroviruses", have played an important role in human evolution.
16. The discovery of the Titanic's wreck was purely an unexpected bonus: Although the Titanic is one of the most famous shipwrecks in history, its wreckage has not been found for decades after the disaster. Until 1985, when Robert Ballard, commander of the US Navy and explorer of National Geographic, was entrusted with searching for the wreckage of two nuclear submarines, he put forward a condition: after completing the military mission, he would use equipment provided by the US Navy to find the wreckage of the Titanic. As a result, with only 12 days left, he found the Titanic, which had been dormant for 73 years, at the bottom of the sea.
17. In 1970, American doctor Robert White successfully performed the first head transplant in history. He successfully transplanted the head of a living heng monkey into another constant monkey without a head. After surgery, the changer was able to breathe on its own and perform actions such as chewing and drinking. However, because the spinal cord failed to connect successfully, the monkey was completely paralyzed from neck down, unable to stand or walk. Nine days later, the changeling monkey died of immune rejection.
18. In the classic 2005 movie "Lord of War", the guns that appear are real. The crew purchased 3,000 AK47 rifles, because it was cheaper to buy real guns and then sell them to others than to make prop guns. In addition, the crew even borrowed real tanks from arms dealers. Soon after filming, the guns and tanks were sold to Libya.