Scientists have calculated the date humanity changes Earth forever

According to a recent study, two scientists have shown an equation to calculate when humans began to shape the Earth.

No one knows exactly when a 10-kilometer block of meteorite fell on Earth, just like the day the land where that meteor fell was called the Yucatan Peninsula. But we know that day is a day about 65 million years ago. The days after that, the Earth became colder, darker and the number of dinosaurs gradually decreased.

The image of a collision between an asteroid and the Earth about 65 million years ago.

The collision has restructured the life support system on Earth by blowing up a large amount of dust, evaporating a huge amount of water and activating hundreds of earthquake and volcanic eruptions. This was followed by a massive extinction marking one of the most famous geological divisions, between the sunset of the white chalk and the dawn of the ancient century. In terms of global impact, humanity seems to be a mirror version of the meteorite. They have changed the planet so much that many scientists believe that modern society deserves its own geological record - the Anthropocene . While no one knows that every day human beings become a force in nature, the two scientists believe they have an equation to determine that moment.

This planet has existed for about 4.5 billion years. Over three-quarters of that time, the Earth has the necessary conditions to support life."The Earth is always in a stable state, feedback loops keep things like the atmosphere and temperature at equilibrium throughout the rotation of time," Owen Gaffney said. , a writer and author of the new study is published in Anthropocene Review. During periods of equilibrium, slow evolution of life forms, extinction is rare and biodiversity is constantly increasing. And then the impact of meteorite or the volcanic eruptions, may also be the Earth tilting half a degree on its axis. Every disaster changes the atmosphere, temperature, ocean components and dozens of subsequent chain reactions that determine what kind of creature is capable of adapting to survive.

1. In 1700, humans used about 5% of the Earth's surface area.In 2000, the area used was 55%.
2. Human-induced emissions are the cause of the acidification of the oceans to the nearly equal extinction of the Permian era, about 300 million years ago.
3. With the estimation being lowered many times, the current level of extinction is 10 times greater than the time of geological equilibrium.

"You can easily list a long list of things people have done to change this planet, but it will soon become boring," said Erle Ellis, an ecologist from the University of Maryland. . According to him, the problem is being debated is whether studies really determine when human activity begins to control the Earth's biosphere.

Ellies is a member of the activist group whose mission is to make preliminary assessments to ultimately define the birth of the child as an official geological record. Legalizing this era will be a major responsibility, and also a controversial issue among Earth scientists. The question is whether human life does not change life on Earth? However, according to Ellis , "There is absolutely no controversy here."

The really controversial issues in the group are quite practical, including: Can all human activities be included in a geological mark large enough for biologists in Future research? And for what reason when we should name a stone floor that it has not yet formed?"Giving a new era at this time really does not bring any usefulness to geologists and geologists in studying the layers of rock to understand its formation process ," he said. Ellis.

Earth in the life of the human being - the period of human life activities is the decisive factor for shaping the Earth.

Co-authored with Gaffney, is the weather scientist Will Steffen of Australian National University, and is also a member of the biophysical team. In a new study of the couple, they describe an equation to compare the effects of the past few hundred years with the basic conditions of the Age of the Era , a geologic year beginning 11,700 years ago. before . "We have comprehensively acknowledged all of the important motor processes and their rate of change," Gaffney said. For most of the time, everything on Earth was in equilibrium - and held steady by the energy coming from the Sun's activity, tilting 26.5 degrees on the Earth's axis, and the absence of the stones are about the same size as the islands falling from the universe.

According to their calculations, the time when human activity completely obscured the dominant impact of the Sun, Earth and meteorites wandering with the shape of life on Earth is about five years. 1950. "This coincides with the first nuclear bombs, and they themselves have produced a trace amount of radioactivity that can be observed in the atmosphere in the atmosphere, which is completely detectable in deep records. , " according to Gaffney. These bombs are also not the first things to be taken care of after the war. The 1950s were marked by an accelerated acceleration under many scientists, a time when the boom of the middle class led to a sudden increase in global GDP, land used for agricultural and operational purposes. paper production, construction of dams, the possession of personal vehicles, travel around the globe and other notable points about resource consumption on Earth. Steffen and Gaffney's equations have only added weight to the argument that the birth-age began in the era of color TVs.

The first nuclear bombs produced a measurable amount of radioactivity in the atmosphere.

Gaffney also did not hesitate to imply that there was a small solidarity between a group of mankind with responsibility for birth and follow-up."Our main conclusion about the most important element of global change is the production and consumption of wealth by the middle and upper classes worldwide . " He also added: "Identifying births can have a widespread impact on society, and has the potential to change the views of the world, similar to Darwin's evolutionary theory, or what Copernicus' heliocentric theory did. "

Mankind is not the first creature and neither does it seem that the last species will shape the world. About 2.3 billion years ago, a single-celled species known as cyanobacteria developed photosynthesis, they took in carbon dioxide and released oxygen to the atmosphere. The fact that a large amount of oxygen is pushed into the atmosphere is sometimes called the oxygen genocide, because they have killed many species of anaerobic organisms that have dominated the Earth. Lime is so successful that their small bodies die when they finally gather to create large oil reserves. And when the first rock layers of the eukaryotes were formed, carbon gas formed from the combustion of the oil itself was a great explanation for why this stone layer had a beautiful gray-black color.

Cyanobacteria - This creature may be small, but the imprints they have saved in Earth's history are not small.

Ellies is one of the minorities of a group of members working on the Biophysics that believes that the roots of this period are deep in the history of mankind."The industrial revolution took place long before 1950", he also said, "Humanity should also consider the unimaginable effects of agricultural activity that began thousands of years ago. before for the biosphere ".