With the long evolution of human beings, human beings will inevitably further evolve to survive in order to adapt to the changes of nature. Countless scientists have predicted the future changes of human beings and given various answers. For example, in the future, our eyes will be bigger, our mouth will be smaller, our height will be shorter and so on.
Science has brought good news to people who often have problems with their teeth. A biologist recently predicted that humans will be able to grow beaks one day. Unlike teeth, the beak doesn't rot, crumble or fall off, making it 'more robust and practical,' said Dr. Gareth Fraser, a biologist at the University of Sheffield in the UK. Scientists tested the chin of puffer fish, which evolved over hundreds of years to form a special beak that could crack crab shells and chew on fragile food. A theory that is currently under study suggests that humans can eventually evolve, too, to grow their own beaks.
The bad news for those afraid of going to the dentist is that the change - the fusion of teeth to form a hard, sharp beak - could take hundreds of years. Dr Fraser is interested in the reason why humans have only two sets of teeth - baby teeth and adult teeth - while other animals have unlimited supply of teeth. For example, sharks can grow new teeth within two weeks. Puffer fish can continuously produce tooth like materials to form their beaks, which means any wear can be repaired immediately
Dr Fraser showed this month at a conference in Barcelona, Spain, that he had identified the cells responsible for the tooth's continued regeneration. The cell, nicknamed the tooth fairy, holds the key to the continued growth of new teeth. If scientists can unravel the secrets of these cells, they will start looking for similar cells in the human mouth. This allows us to grow the necessary teeth when we need them. We may even grow better teeth than nature. Dr Fraser said: 'I guess people will see if you have a good tooth, but there will always be orthodontists, even if you have new teeth, they will always need to be corrected. 'Dr Fraser added:' with our increasing lifespan and the need for a modern diet, the limited supply of teeth no longer meets our needs. "Our research focuses on finding new ways to replicate the infinite regeneration of fish teeth and apply this ability to humans. 'but now you still need to pay close attention to your dental health, because Dr. Fraser estimates that it will take us at least 50 years to grow additional teeth. In the short term, gelatin or cream products may be used to repair rotten and damaged teeth and remove the need for filling materials. Eventually, evolution will provide their solutions.
Dr Fraser said: 'it's very likely that eventually humans will develop a puffer like beak, which is both robust and practical. 'the sharp, venomous puffer has teeth at first, and then quickly becomes a beak to break shells and crush and cut fish. Although the beak is very durable, Dr. Fraser said he would rather keep his teeth: 'I'm very satisfied with the shape of my teeth - although I want to have more. '