Add Yahoo as a preferred source to see more of our stories on Google. Knowing your blood type is critical during emergency health situations. Knowing your blood type is crucial medical information, ...

When you think of medical information you probably don't immediately consider your blood type. However, more than 1-in-3 Americans don't know their blood type. This can put you in danger, especially ...

Forbes contributors publish independent expert analyses and insights. I write about biodiversity and the hidden quirks of the natural world. There’s more history in your blood types than you think, ...