Watch 25 minute online video by Sam Harris,

http://www.ted.com/talks/sam_harris_science_can_show_what_s_right?language=en

and respond to these 3 questions. 

1) If science says physical punishment of children is bad for them (short and long term), but a holy book says otherwise, what should parents do? Presumably there is a right and a wrong thing for parents to do (even if there are differences between how individual children respond to physical punishment), but which is which and how can we know?

2) is science the authority on morality? Justify your position. 

3) Explain Harris' argument for how science can tell us what we morally ought to do