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, ...

Blood – everyone's got it. In fact, an adult who weighs between 150 and 180 pounds has around 1.2 to 1.5 gallons of blood in their body. This makes up approximately 10% of an adult’s weight. Blood ...

In an emergency, knowing your blood type could save your life. While this may sound dramatic, it’s true, especially if you have a rare blood type such as AB-negative. If you’ve never given blood or ...

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, ...