(September 28, 2011 at 11:46 am)Jesuslovesyou Wrote: So why aren't there other human like species on earth? Why are we the only ones?
There were plenty of other human species on this planet as little as 20 thousand years ago, in fact, non African humans have been found to have neanderthal dna in them proving that we cross bred.
There are none left today because our particular branch of the human family was/is so successful that we drove all the others to extinction.