(via Be Smart) Across life on Earth, blood comes in red, blue, green, purple, even clear. But why? And what makes your blood different from mine? This video will teach you everything you need to know ...

More than 100 years ago, Dr. Karl Landsteiner discovered that not all red blood cells are alike. He found that, when different people's blood was mixed, it would often clump up and curdle, destroying ...

Do you know your blood type? Scientists say everyone should in case of a life-threatening event that results in a need for a blood transfusion. But now, they've discovered a new group of blood types ...

Most humans fall into one of four blood groups — A, B, AB or O. Ordinarily, your blood type makes very little difference in your daily life except if you need to have a blood transfusion. Other WRAL ...

Most people don’t spare a thought for their blood type unless they’re in need of a transfusion — but could yours hold secrets to your health? There are four main blood types: A, B, AB and O.

Did you know that your blood type can make you a lifesaver? Whether you're an O- universal donor or an AB+ universal recipient, every drop counts! In the UAE, donating blood is more than a good ...