The Origins of Homo Sapiens

There used to be a theory that a super volcano eruption some 75 thousand years ago in indonesia and what's now lake toba caused a global climatic catastrophe. Once they left, this group served as the immediate ancestors of all non africans. This initial founding group then became the major source of ancestry for non-Africans everywhere from britain to india to siberia to chile. We can trace most of to day's existing lineages to them.