There's a bacteria living in a hot springs that doesn't have DNA. Well, not anymore.
While early reports suggested that this bacteria evolved naturally with arsenic instead of phosphorus in its DNA, it turns out that it did this in the lab.
Which is still amazing. Life can evolve to really weird chemistry that we thought was universally toxic. But it would be even more amazing to see bacteria that live in the wild that use another molecule for their genetics, alongside the sulfur-based deep sea vent bugs.
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