ali smack, on 04 February 2013 - 01:05 PM, said:
how does science explain good and evil
This is probably posted in the wrong place, it should go in the philosophy forum.
Science explains morality as a natural extension of the ethical behaviour we see in other species, especially other apes besides us.
You can read quite a bit for free in this google book preview on
Primates and Philosophers: How Morality Evolved
In more general terms, the field of
evolutionary psychologyhas much to say about reciprocity and deceit. The field of Sociology addresses how we interact as groups, and clinical psychology deals with "fixing" those who act outside the bounds of society.
Our justice system revolves around the concepts of fairness and wrongdoing. Law is based on philosophy, which is also a science. Science has a lot to say about ethics and morality.