Discarded DNA: The controversial clue in the trash that's bringing serial killers to justice

My brother told me I had great legs. What incenses me more than the fact he said it, is the fact that I thought it was appropriate commentary, a fair evaluation of my physical attributes. I was 22 years old, he was 28. The thought never dawned on me that eldest brothers shouldn’t think of their sisters in that way. How did I know Steve and I were different? And I don’t mean different in the typical sense, like how all people are different some way or another. I mean fundamentally different — our values, our ethics, our morals, all the true substances of what makes people who they are...