“In 100 years, air will become a luxury”: discover how the imminent disappearance of oxygen will upset survival on earth

The earth, our precious blue planet, could well experience a future that few of us would have envisaged. In addition, Scientists warn us against a radical transformation of the earth’s atmosphere, where oxygen could become a rare commodity. In addition, This perspective, although distant, pushes us to reflect on our role and our place “in 100 years, air will in the planetary ecosystem. Furthermore, A recent study published in Nature Geoscience highlights a possible tilting that could upset life as we know it.

Back to a toxic past – "in 100 years, air will

The researchers predict that the earth’s atmosphere could return to a state similar to. Moreover, that observed 2.4 billion years ago, before the major oxidation event. Furthermore, At that time, methane dominated the atmosphere, making oxygen almost nonexistent. For example, Kazumi Ozaki. For example, an eminent researcher from Toho University in Japan, explains that this transformation would be due to the natural evolution of the sun. Additionally, For example, By becoming brighter. the sun influences the geochemical cycle of rocks and carbon, thus resulting in a progressive decrease in carbon dioxide (CO₂) in the atmosphere. This change could mark a return to a time when life as we know it would be impossible to support.

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The day when oxygen will collapse – "in 100 years, air will

Humanity could witness a drastic drop in oxygen Long before the oceans evaporate. an event hitherto considered the end of the habitable land. IT models “in 100 years, air will show that oxygen levels could fall at levels close to those of the Archaean era. a million times less than today. Geochemist Chris Reinhard of the Georgia Institute of Technology underlines that this fall would be “really, really extreme”. The end of oxygen would mark the disappearance of humanity and many other forms of life.

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A model based on 400. 000 simulations

To reach these alarming conclusions, the researchers carried out nearly 400,000 simulations. These simulations have taken into account the evolution of the sun. the drop in CO₂, due to the growing heat which destroys the molecules of this gas. Less Co₂ means fewer plants to perform photosynthesis, which leads to a decrease in oxygen production. Previous studies had provided that the intensification of solar radiation would make the oceans disappear in around 2 billion years. but the reduction in oxygen could kill life well before that.

Implications for the search for life elsewhere

This discovery upsets our approach to the search for extraterrestrial life. So far, scientists considered oxygen as a key indicator of life. However, this study “in 100 years, air will shows that a habitable planet may not contain oxygen for a large part of its existence. The NASA Nexss project Explore new methods to identify potentially habitable worlds outside the solar system. questioning our current understanding of life in the universe.

A future dominated by oxygen -free microbes

The calculations provide that the era rich in Earth oxygen will only. represent 20 to 30 % of its total lifespan. After great deoxygenation. the atmosphere will contain more methane, very little co₂, and above all, more ozone layers to protect us. The forms of life that could survive would only be anaerobicsimilar to the microbes present on earth long before. Furthermore, the appearance of humans. This suggests a future where complex life, as it exists today, would only be a distant memory.

What does the future have in store for us in a world where oxygen becomes rare? This perspective raises “in 100 years, air will essential questions about our ability to anticipate and adapt to environmental changes. The question remains open: will we be ready to leave our planet in time to avoid the collapse of. its atmosphere?

This article is based on verified sources and the assistance of editorial technologies.

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