of "natural causes" or disease? If that's truly the case, wouldn't we have to limit births to a number no higher than that which would replace other causes such as accidents, murder and suicide? Is that "evolution"? I can't think it is. We do have evolution going on but not in the human species. It's in the tiny life forms we're trying to eradicate. We know they're getting stronger while we become weaker. It's my understanding that natural selection is a key component of evolution. When we take away natural selection from the equation, we go backward and not forward.