[canalabamian]

After the eruption 73,000 years ago, the human population dropped drastically and reached a bottleneck population of about 1,000 people (the bare minimum needed to sustain the species in a healthy fashion.) This bottleneck is also responsible for the lack of genetic diversity in us. Compared to other species we are one of the most similar genetically. Toba played a big part in that.

So who documented this? Or is this another "theory", like "evolution".

[OldGuard1]

> Or is this another "theory", like "evolution".

That's a good point - on what grounds can they claim this? Sometimes, I have some problems with these modern biology that tell us that evolution is fact, a fetus isn't a person, and dehydration is a good way to die. :P Perhaps it's wrong of me to lump them all together, but you keep seing this sort of assertion of completely speculative stuff as if they're absolute facts.

[meatloaf]

That's been confirmed through DNA through the rate of mutations.