Red blood is the exception, not the rule. Evolution has painted it green, purple and white in animals that push physiology ...

Human blood types have deep evolutionary roots ScienceNews: A new analysis suggests that the A, B and O blood types in people evolved at least 20 million years ago in a common ancestor of humans and ...

Human blood already comes in a bewildering variety of types, but researchers have now identified a new one so rare that only three people on the planet are known to carry it. The finding exposes just ...

In a groundbreaking development, French scientists have identified the world’s rarest blood group, known as Gwada-negative. It's a blood group so rare that only one woman in the world is known to have ...

Shaw Badenhorst works for the University of the Witwatersrand. He receives funding from GENUS, the National Research Foundation and the Palaeontological Scientific Trust. South Africa has one of the ...