Across life on Earth, blood comes in blue, green, purple, even clear. But why? And what makes your blood different from mine? This is the strange world of blood—what it does, why it varies, and why we ...

Add Yahoo as a preferred source to see more of our stories on Google. Gloved Hand Holds Blood Vial Research suggests a surprising link between blood type and stroke risk, with people carrying one ...

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.

Your blood type isn’t just relevant when you need a transfusion. It fundamentally influences which diseases you’re most susceptible to throughout your life. Scientists have discovered that the ...