I went to the Royal Institute last week to hear the laconic and dismissive Dr Guy Kahane on whether we are 'Biologically Moral' 

[His message: Neurological evidence suggests - somewhat alarmingly - that our moral and ethical decisions may be no more than post-hoc rationalisations of purely emotional, instinctive reactions.  However, we should not panic because this is early days in neuroscience, and the correct interpretation of brain-scans is uncertain: scientist find the pattern, and the explanation, they expect to find]