Radical Study Suggests Life on Earth Arose Twice
(Saturday August 08, 2026 @11:34AM (BeauHD)
from the only-one-conclusion dept.)
A new study argues that life [1]may have emerged twice on Earth . "Two of the main lineages of life -- bacteria and archaea -- may have independently figured out the secrets of metabolism that upgraded them from non-living to living," reports ScienceAlert, citing a new study that "focused on the most rudimentary set of chemical reactions thought to enable this transformation." From the report:
> "The surprise is that the enzymes that catalyze those reactions are not conserved across the evolutionary divide that separates bacteria and archaea," [2]says William Martin, a biologist at Heinrich Heine University Dusseldorf in Germany.
>
> "The new data leave only one conclusion. The bacterial and archaeal lineages made the transition to the free-living state independently. Only free-living cells are alive. "Let's call it by name: we are looking at one origin of the genetic code, but two origins of life." That's a huge claim to make, especially when defining what life even is can be surprisingly tricky.
The findings have been [3]published in the journal Science Advances .
[1] https://www.sciencealert.com/radical-study-suggests-life-on-earth-arose-from-non-living-matter-twice
[2] https://www.eurekalert.org/news-releases/1138775?
[3] https://dx.doi.org/10.1126/sciadv.aef3128
> "The surprise is that the enzymes that catalyze those reactions are not conserved across the evolutionary divide that separates bacteria and archaea," [2]says William Martin, a biologist at Heinrich Heine University Dusseldorf in Germany.
>
> "The new data leave only one conclusion. The bacterial and archaeal lineages made the transition to the free-living state independently. Only free-living cells are alive. "Let's call it by name: we are looking at one origin of the genetic code, but two origins of life." That's a huge claim to make, especially when defining what life even is can be surprisingly tricky.
The findings have been [3]published in the journal Science Advances .
[1] https://www.sciencealert.com/radical-study-suggests-life-on-earth-arose-from-non-living-matter-twice
[2] https://www.eurekalert.org/news-releases/1138775?
[3] https://dx.doi.org/10.1126/sciadv.aef3128