How much time can humans live on Earth?

Scientists generally believe that it will not be too long, because human beings are not very good at using resources and environment, human civilization has experienced 4 times of destruction before this, and many natural and thought factors caused by the destruction, it is inevitable that scientists, scientists generally estimate that the earth will enter an ice age in 5 million years, when human beings have ceased to exist. As for how many years it can last, it depends on human beings themselves, as fast it will be destroyed in a hundred years, and slow as it can last for tens of thousands of years, or even hundreds of thousands of years.

That's a boring question!!

How long humans can live on the earth depends entirely on how humans play with the earth!!

Maybe in billions of years, maybe tomorrow there will be a nuclear war, and all at once it will be gone!

The one who doesn't know you"The original world"How is it defined.

Obviously, unless the human race dies, it is impossible to return to the original world, hehe!

And now the world's scientific and technological economic pattern, accustomed to enjoyment, can only move forward, do not want to go backwards!

There is a lot of evidence that civilization is cyclical on the earth, that is, the civilization of the previous region is destroyed, and the next civilization evolves to modern society without knowing it, and then dies again for subjective and objective reasons. For example, in the movie "Planet of the Apes", it is believed that because of humans and war, it led to the extinction of human beings, and later apes established a new civilization, of course, the human beings in it are very miserable. This cycle is also recognized by many scientists, and in the long run, it is more likely that human beings will not die well, but at least in the foreseeable time, it will be fine, so let's cherish the beautiful present. Hehe.

You don't have to worry about it, you can be sure that in your lifetime, the earth will not perish! Hehe.

It's long, don't worry, you can't see that day.

Direct evidence for the study of human origins comes from fossils. Anthropologists use the method of comparative anatomy to study various fossils of ancient apes and humans, determine their relative and absolute ages, so as to determine the age of human fossils, and roughly divide the evolutionary history of humans into several stages. Geneticists use biochemical and molecular biology methods to study the size and rate of mutation of proteins and deoxyribonucleic acid (DNA) between modern humans, various apes and other higher primates to calculate their respective origins and differentiation ages.

At present, it is generally believed that the time when Australopithecus transformed into the first human ancestor was 7 million years ago.

Judging from the human fossils that have been discovered, the evolution of human beings can be roughly divided into the following four stages:

1) Australopithecus stage. Australopithecus australopithecus has been found to have lived between 4.4 million and 1 million years ago. According to the study of the anatomical features of fossils, the most important feature of Australopithecus that distinguishes it from apes is its ability to walk upright on two legs.

2) Capable person stage. 2,000,000 BC-1,750,000 BC. Homo sapiens fossils have been discovered in Tanzania and Kenya in East Africa since 1960.

The first Homo hoans existed 1.9 million years ago. Homo habilis is classified under the family Homo HabilisHomo sapiens had significantly larger brains than Australopithecus australopithecus, and could use stones as materials to make tools (stone tools), which gradually evolved into Homo erectus.

3) Homo erectus stage. Homo erectus belongs to the homo genus homo erectus (homo erectus), referred to as Homo erectus, commonly known as ape-man. Homo erectus fossils were first discovered in 1891 in Java, Indonesia.

At that time, there was also a debate about whether it was a man or an ape. It was not until the 20s of the 20th century that the fossils and stone tools of Peking Man were discovered in Zhoukoudian, Beijing, which established the position of Homo erectus in the history of human evolution. Homo erectus lived from about 1.7 million years ago to more than 200,000 years ago.

To date, Homo erectus fossils have been found in Asia, Africa and Europe.

4) Homo sapiens stage. Homo sapiens is generally divided into early Homo sapiens (ancient Homo sapiens) and late Homo sapiens (modern humans).Early Homo sapiens lived between 200,000 and more than 100,000 years ago.

Late Homo sapiens began about 100,000 years ago. Its anatomy has been basically similar to that of modern humans, so it is also called modern humans in anatomical structure.

Based on the fossil evidence of humans that has been found so far, Australopithecus is the earliest known human.