Why did All other "Human Species" go extinct ?

Yep! You and I both share Neanderthal DNA and Denisovan DNA. It is pretty darned cool.

 

At least two of the extinct, ancient humans had type O blood, making them the “universal donor”, according to a new genetic analysis of remains of 45,000 year old individuals.

Neanderthals: Original 0 negatives?

 

I wasn´t aware they had become extinct - I thought they were alive and well and using DP.

 

Well, the number of neanderthals in comparison to homo sapians were low as we know at this time. so it is possible for the neanderthal to melt into homo sapians.

 

[video=youtube;xat1GVnl8-k]http://www.youtube.com/watch?v=xat1GVnl8-k[/video]

 

News on a third related species of humans that our ancestors bumped uglies with: Humans Had Sex Regularly With Mysterious Extinct Relatives in Africa.

 

This is the region where Neanderthal remains have been found:



In the same region the average person has1-4% of their DNA matching the Neandies. In Africa where no remains have ever been found, the percentage is 0.