Scientists have created a climate computer model that confirms human evolution

If you think that the climate is changing only now, due to human impact, we hasten to upset you. The climate is constantly changing.

It is known that vineyards once grew even onterritory of modern cold and rainy Scotland, and now almost nothing grows there. But what is significant is how the appearance of people has changed due to changes in climatic conditions.

Man is a creature that has always been inclinedto discoveries. People from Africa have spread all over the globe. And if initially they were all the same outwardly, then over time races appeared, which, again, received their own characteristics due to the climatic conditions in their place of residence.

Perfectly demonstrates the whole thingresearch group from Busan National University (South Korea). The other day, she published a study according to which human growth is due to changes in prehistoric weather.

For the study, the team took data on general circulation during the Pleistocene, as well as on fossils that have been found in human and primate habitats over the past 2 million years.

Thus, it was possible to obtain data on what the temperature used to be on the surface of the sea, in the tropics, Antarctica, and even on how often it rained in East Africa and Asia.

Essentially, the team was studying how rainfall cyclesand temperature changes over the past 41,000 years, caused by the Earth's axial wobble, have affected the availability of resources for early humans and our close relatives.

It turned out that 70 thousand years ago Homoheidelbergensis, which may be the ancestors of Neanderthals and modern humans, have begun to expand beyond their traditional habitat. Why? But because, most likely, then there were just the very conditions that made it possible to leave the usual places. Just then the climate was more humid and warmer.

And, tellingly, as these wet zones moved, people moved as well, as evidenced by numerous archaeological finds.

"The global collection of skulls and household tools is not randomly distributed over time," team leader Axel Timmermann told Nature. "It looks like a pattern."

At its core, says Timmerman, the modelallows us to show that all people had a single evolutionary path that began with a drought in South Africa. From there, the ancestors of people were forced to leave, and as a result, they began to develop in new lands.

“We recognize that subdivisions of our species maybe inconsistent and that they do not necessarily require constancy of morphology, habitat and behavior,” the team wrote. “However, while some species, such as H. heidelbergensis, may be in doubt, we remain confident that much of the study is scientifically sound, given that 86 percent of the underlying data belong to a well-defined, widely recognized as H. neanderthalensis or H. sapiens and consistent with tool-making records and traditions.”