Earth's Most Uninhabitable Place Found
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The study, published in the journal Nature Ecology and Evolution, revealed that any form of microbial life was absent in the hot, saline, hyper acid ponds of the Dallol geothermal field in Ethiopia.
 

 

Researchers have found an aquatic environment on the Earth with complete absence of any forms of life, an advance that may lead to an improved understanding of the limits of habitability.
 
The study, published in the journal Nature Ecology and Evolution, revealed that any form of microbial life was absent in the hot, saline, hyper acid ponds of the Dallol geothermal field in Ethiopia.
 
The researchers, including those from the Spanish Foundation for Science and Technology (FECYT), said Dallol's landscape extends over a volcanic crater full of salt, constantly releasing toxic gases with water boiling in the midst of the intense hydro thermal activity.
 
They said it is one of the most torrid environments on the planet with daily temperatures in winter exceeding 45 degrees Celsius.
 

The landscape, the researchers said, had abundant hyper saline and hyper acid pools, with pH -- which is measured on a scale from 0 (very acidic) to 14 (very alkaline) -- even hitting the negative mark.
 
Earlier studies had pointed that certain microorganisms can develop in this multi-extreme environment and researchers presented the place as an example of the limits of conditions that can support life.

 

The researchers said the place was even proposed as a terrestrial analogue of early Mars.
 
"After analyzing many more samples than in previous works, with adequate controls so as not to contaminate them and a well-calibrated methodology, we have verified that there's no microbial life in these salty, hot and hyper acid pools or in the adjacent magnesium-rich brine lakes," said study co-author Purificacion Lopez Garcia from FECYT.
 
The researchers found great diversity of a type of primitive salt-loving microorganisms in the desert, and the saline canyons around the hydro thermal site but not in the hyper acid and hyper saline pools, nor in the Black and Yellow lakes of Dallol which are rich in magnesium.
 
"And all this despite the fact that microbial dispersion in this area, due to the wind and to human visitors, is intense," Lopez Garcia said.
 

 
 


 
 


 
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Prashnavali

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