I am posting the following spontaneous IM yawp at the request of Rog: [10:37] Heatkernel:* yeah, man the proterozoic era[10:37] Heatkernel: that was the real party time[10:37] Heatkernel: for the microbes[10:37] Heatkernel: I’ve been reading about that in Margulis (* “Heatkernel” substituted for actual IM screen name).

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