February 1, 2023

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This would be the end of most life on Earth.  Suddenly, all the oxygen - o2 - will be gone

This would be the end of most life on Earth. Suddenly, all the oxygen – o2 – will be gone

Research published in “Nature Geoscience” suggests thisThat a rapid change on Earth may occur in about a billion years. If humanity does not succeed in colonizing other planets by then, it will mean the end of our species.

The end of oxygen on the green planet

According to the authors of the report – Christopher T. Reinhard from the Georgia Institute of Technology in the United States and Kazumi Ozaki from Toho University in Japan – in the distant future, the Earth’s atmosphere will return to its state in about 2.4 billion years. Before the so-called. great oxidation. Interestingly, the researchers also say that oxygen in the atmosphere is unlikely to be a consistent feature of habitable worlds. So this could be an important clue when looking for signs of life in other parts of the universe.

The insight provided by the authors of the article is based on an average of nearly 400,000. simulation. The researchers came to this conclusion by making detailed models of the Earth’s biosphere, taking into account the change in the brightness of the Sun and the decrease in the level of carbon dioxide (this gas breaks down under the influence of increased heat). Low carbon dioxide means fewer photosynthetic organisms such as plants, which leads to less oxygen.

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See also: The Arctic is warming faster. Experts sound the alarm about climate change as a dangerous phenomenon

The model predicts that atmospheric deoxygenation, with oxygen reduced to levels similar to those found in ancient Earth, likely triggered before the onset of moist greenhouse conditions in our climate system and before widespread surface water loss, the researchers explain.

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