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From at Arunas Radzvilavicius at RealClearScience:
A study published last month in Nature Microbiology suggests the last common ancestor of all living cells fed on hydrogen gas in a hot iron-rich environment, much like that within the vents. Advocates of the conventional theory have been sceptical that these findings should change our view of the origins of life. But the hydrothermal vent hypothesis, which is often described as exotic and controversial, explains how living cells evolved the ability to obtain energy, in a way that just wouldn’t have been possible in a primordial soup.More.
In short, we have contradictory explanations but the vents are back in the news:
See also: Hydrothermal vents spout life again at New Scientist
Hydrothermal vent models make life inevitable?
and
Origin of life: Could it all have come together in one very special place?
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