It is often stated that science is not 'value-free'. However, there are certain established facts about the physical world, for example, that a water molecule contains one oxygen and two hydrogen atoms, which irrespecitve of the values of observer or the social context in which this is observed, is just that, ie. an observable, indisptuable fact. How then can political or social environments alter or intrude upon such scientific facts whether they be about this planet, biology or whatever scientific enterprise one is studying. Surely, science in this regard is 'value-free'?