And...
Along the way of human evolution, there were perhaps at least two
dozen distinctly human species existing in the 4 to 5 million year
period when we could actually call a smart ape something else. And
of all of them, we are now it.
Thanks for the info on Toba, Nick. I love learning something new.
And I am still waiting to see the evidence that the depression in
Tennessee is a meteorite impact crater and not a volcano.