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@meena @AnarchoCatgirlism @inthehands

I saw an interview with a biologist that completely reoriented my thinking on this topic. Her specialty is studying the human microbiome -- the countless gut bacteria, skin mites, and so forth with which we are symbiotic. We are constantly exchanging these with our environment in ways which are not well understood. Talking about the challenges of replicating this in a space colony, she said "We're not *from* Earth. We're *part of* Earth."

WHAM.