Was blood a factor in the demise of the Neanderthals? New research is showing that Homo sapiens underwent huge changes in their blood groups after leaving Africa, between 70,000 and 45,000 years ago, ...

understanding blood group variations is essential for ensuring safe transfusions. While most people are familiar with the ABO blood system and the Rh factor, human blood classification is far more ...

Human populations that left Africa evolved quickly whereas Neanderthals stayed the same, according to an analysis of blood group systems.