Maybe it should be on humor. But
Science is great!
Something I'd never heard before:
The genetic chaos continues. The Endosymbiotic Theory says that the mitochondria in our bodies, without which we couldn’t live, let alone write snide humor articles, was at one point a separate organism that invaded our cells and set up camp. They formed a symbiotic relationship so beneficial that we’ve never booted them out. Furthermore, large chunks of the human genome are thought to be ancient retroviruses that managed to transcribe themselves into our DNA and have spent the remainder of their days happily clambering up and down our nucleotides like the McDuck children on a mansion banister. Basically your cells are millions of individual organisms, all huddled together in a you-shaped beehive. Now see how long you can go before wanting to shower.
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