We all know there's a heart in the body; we've been reading about it since childhood. As long as it beats, humans live. Let's ...

Rachael has a degree in Zoology from the University of Southampton, and specializes in animal behavior, evolution, palaeontology, and the environment. Rachael has a degree in Zoology from the ...

The primary symptom of a heart attack is pain or discomfort in the center of the chest, Dr. Lloyd-Jones said. All the experts described the feeling as if an elephant were sitting on your chest. This ...