July 24, 2011 THE COAL SPEAKER 9% of humans everywhere may be part Neanderthal.. why? .. Humans and Neanderthals may have had sex together.. 9% of humans everywhere may be part Neanderthal.. why? .. Humans and Neanderthals may have had sex together.. Tweet Related Discover more from The Coal Speaker Subscribe to get the latest posts sent to your email. Type your email… Subscribe