this post was submitted on 08 Oct 2024
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2-bn-year-old rock harbors living microbes, rewrites life's history (interestingengineering.com)
submitted 10 months ago by Dadifer@lemmy.world to c/science@lemmy.world
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[โ€“] booly@sh.itjust.works 3 points 10 months ago (1 children)

one that eats sulfur and excretes iron, and one that eats iron and excretes sulfur

Thermodynamically, how could these two cycles sustain metabolism? Were there other processes/species in the mix to introduce chemical compounds that had more energy contained within?

[โ€“] weariedfae@lemmy.world 3 points 10 months ago* (last edited 10 months ago)

I don't recall as it was mentioned by someone in passing (and stuck with me) but I can tell you that the rocks they were in are exceptionally iron rich, which is why the mine was there.