If you’d like get a different perspective on the origins of homo sapiens on this planet, take some time and look at this guys interpretation of ancient Sumerian texts.
I don’t have an opinion one way or the other regarding the accuracy of his interpretation, but it does provide an interesting perspective on things that science still can’t explain, like the missing link.
Basically goes into how there was this planet called Niburu or something like that that came into orbit close to earth every ten thousand years or so. They were having some kind of atmospheric/environmental problems and the solution was some kind of mono atomic gold that could be processed from the earths oceans. It proved to be a very labor intensive project so they did some genetic engineering on primates here so they could do the work.
Again, not saying it’s fact or anything, just an interesting take on things.