Death Redefined with Heart Attacks

"May 7, 2007 issue - Consider someone who has just died of a heart attack. His organs are intact, he hasn't lost blood. All that's happened is his heart has stopped beating—the definition of "clinical death"—and his brain has shut down to conserve oxygen. But what has actually died?"

Wow. Oxygen actually kills you! Wow, we've been killing people for years then. Well, in the right situations anyways. It's a damn interesting article.