Everyone says that today's children are very happy, completely spoiled and have whatever they want. Is that true? They know how to climb trees and climb walls in the game, but in reality, they may not even see the woods. They listen to pop music from all over the world, but never appreciate the crisp singing of birds in the forest. This is what we are going to call "natural deficiency" today. In fact, their life is less fun.
Natural deficiency disorder (NDD) is a term proposed in the best-selling book "the last child in the forest" by American writer Richard louv. In his book, louv emphasizes that the absence of nature is not a disease that needs to be diagnosed or treated by doctors, but a dangerous phenomenon in today's society, that is, children spend less and less time in nature, which leads to a series of behavioral and psychological problems.
So far, it is still difficult for us to scientifically explain why human beings are inseparable from nature. Perhaps man's need for nature is something written into our genes. After all, human beings have been with forests and caves for millions of years, while buildings and steel have been together for only a thousand years.