This is a great topic, which makes it all the more disappointing that is was so poorly covered. The dramatization were overdone and got in the way of the science, and the zippo-doo graphics were instantly annoying. And finally, the choice of Danny Glover as a narrator was a big mistake, as he does not have the diction necessary for such a narration intensive program.If this topic interests you, be sure to read"The Seven Daughters of Eve", by Sykes