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 ...

Chances are, you’ve already interacted with a knowledge graph today. If you’ve searched on Google, asked Alexa a question, searched for someone on LinkedIn or Facebook, or ordered food on UberEats, ...

A person's blood type is determined by "the presence or absence of certain antigens – substances that can trigger an immune response if they are foreign to the body," according to American Red Cross.

Common cold viruses include rhinoviruses, adenoviruses, human parainfluenza virus, and respiratory syncytial virus. Most resolve on their own with rest and over-the-counter medications. Share on ...