Science
Eating monkeys and washing your face with cow urine, why is Africa, where humans originated, still very backward?
When you think of the poor places in the world, what is the first thing that comes to your mind? Many people may unconsciously think of Africa, because in the minds of most people, Africa is a poor, backward, messy and unsanitary place.
By suzanne darlene3 years ago in Earth
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Robot Can grab the "paper-cut" hand of raw egg yolk The art of three-dimensional origami makes the two-dimensional sheet material form a three-dimensional structure by cutting and folding. However, it is still very difficult to reverse design the shape and cutting method of the two-dimensional sheet according to the required three-dimensional structure, especially the three-dimensional structure with complex curved surface. However, a recent study in the journal Nature Communications suggests a new way to solve this problem.
By gaisndm Hawkshaw3 years ago in Earth
What would happen if the sea suddenly disappeared? How long can we humans last?
The total area of our planet's oceans is about 361 million square kilometers, or about 71 percent of the Earth's surface area. The ice spring is about 4 kilometers deep, and the ocean contains 1.37 billion cubic kilometers of water, accounting for more than 97% of the total water on the earth. It plays an extremely important role in the evolution of life on our planet.
By suzanne darlene3 years ago in Earth
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Medical science The robot performs laparoscopic surgery on pigs without human help. Enterostomy is one of the most challenging tasks in gastrointestinal surgery, which requires surgeons to sew the window accurately and steadily. Even the slightest hand shaking or misplaced needle can lead to leakage and may bring catastrophic complications to the patient. Recently, Johns Hopkins University has developed an intelligent tissue autonomous robot, STAR, which has successfully performed laparoscopic operations such as intestinal anastomosis in pigs without human guidance. The research is published in the journal Scientific Robotics.
By gaisndm Hawkshaw3 years ago in Earth
Uncover whether the crop circles are man-made, or marks left by aliens on the earth?
The mysterious crop circles must be familiar to everyone. They first appeared in the 16th century. At first, they were only concentrated in the southern part of the United Kingdom. Later, they appeared in the United States, Australia, Japan and other parts of the world.
By suzanne darlene3 years ago in Earth
Traditional Chinese medicine is not backward, it is too advanced. Too much content is lost in the inheritance, resulting in fragmentation
According to the existing evidence, 99.9% of the meridians of the human body are some kind of quantum channels. But in nature there are only paths of quantum operation, and these paths change every moment, the paths are random, and there is no fixed quantum channel.
By adalberto alejandrina3 years ago in Earth
