The ancient fossil bone fossil dating back to 160,000 years is the oldest specimen ever discovered in the high mountains, explaining how humans adapt to an oxygen-deficient
Scientists think somewhere around 60,000 to 100,000 years ago, the first human ancestors migrated from Africa, meeting the first large group of gibbons in Eurasia.
The interaction between Neanderthals and one species in the extinct genus Denisovan helps strengthen the immune system and leave evidence in the DNA of modern humans.