Xnon I have a tendency not to see biological and social sciences as separate things, so that makes what explanations we have multifactorial by default. I should have made that clearer. What I have trouble with is the idea that humans are somehow special or better because we have morals - I think it's far less simple than that.
BigFatLiar I think there are people who 'believe' in Einsteins Theory of Relativity in the same way people believe in God, angels miracles and so on. To me that's like believing in a chair. It's there, it has a function. It's possible that at some point in the future, someone will invent something that has the function of a chair but is much better. Until then the chair is what I've got. I don't believe in it, I sit in it. Same with any scientific theory - after all you can't prove that a scientific theory is definitely true, you can only falsify it. And until it's falsified, it's what you have and you make it work. People don't understand how science work - the Theory of Evolution is technically just a theory, because it hasn't been proven, but right now it's the best answer we have to a knotty question, so it's what we work with. It's worth reading up on Karl Popper to understand this building block of science - the words 'it's only a theory' are often thrown about to dismiss scientific endeavour. Young Earth Creationists especially have form for this.
I don't think that scientific endeavour is at all the same thing as saying 'God did it' - because once you've said the latter, people often stop questioning (not everyone, obviously - otherwise we wouldn't have theology and religious philosophers). Scientists tend to ask a question, obtain a partial or imperfect answer, make do with it but continue to ask questions, refine their answers, keep searching. That's why we have progress - better housebuilding, better medicines, better vehicle design. And each improvement is built on the previous one.