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cute_spider wrote

Those cyanobacteria caused one of the biggest extinction events ever, didn't they?

Gosh it is wild to be reminded that humanity still hasn't had the greatest effect on Earth yet

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WRETCHEDSORCERESS OP wrote

yup! it's hard to know the extent of it since ancient microbial fossils and fieldsigns are harder to work with (but do exist!) but it probably took out like. the majority of life at the time. utterly remade the world. really wild stuff

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cowloom wrote

This was going to be my question; I couldn't remember if the introduction of oxygen caused one of the 6 great mass extinctions. At least we have the cold comfort of knowing we aren't the only species to trigger a mass extinction event.

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