Great... as if conference re-alignment wasn't bad enough, now I have to start worrying about super-volcanoes again. :-(
You know... the MOST amusing part of all the Glow-Bull Warming alarmism is... anyone who knows ANYTHING about global climate knows; we are LONG overdue for another Ice Age. It WILL come... and, when they do, they start remarkably quickly.
Most likely, I'd guess... getting kick started by something like Toba. CHEERS!
And is that related to the (fairly) recent assertion by evolutionary biologists that the human race cannot be traced back to a number fewer than 10,000? I haven't really looked into the details, but it occurred to me that the human race may have gone thrugh quite a few "chokepoints" at which times there were significant die-off, with the survival of a relative handful who then became the progenitors of the human race.
All of them would still have had --- if you went well back before the choke-point event --- the same ancestors, even if they were, so to speak, "Mitochondrial Eve" and "Y-Chromosome Adam". Thus all present humans of whatever ethnos are the same species, and thus spring from the same genetic ancestors, with subsequent spread and variation.
I have no idea if the population chokepoint referred to by the evolutioonary biologists is the same thing as the Late Pleostocene event, or even related; nor do I know where to put these events on a time line, although I am supposing it's a sensible time-line comprising only a few million years.
Can you (or some other well-informed FReeper) give me a clue here?