Do humans have a different moral significance than cows in general?

It is absolutely safe to say that if you meet somebody who claims not to believe in evolution, that person is ignorant, stupid or insane (or wicked, but I'd rather not consider that).

Do humans have a different moral significance than cows in general?

Not only is science corrosive to religion, but religion is corrosive to science. It teaches people to be satisfied with trivial non-explanations and blinds them to the wonderful real explanations that we have within our grasp.

I don't think God is an explanation at all. It's simply redescribing the problem.

People who criticize The Selfish Gene like that often haven't read it. The selfish gene accounts for altruism toward kin and individuals who might be in a position to reciprocate your altruism.

I am thrilled to be alive at time when humanity is pushing against the limits of understanding. Even better, we may eventually discover that there are no limits.