Museums
I would guess by now most people (in the UK, at least) have seen the tragic news of the huge fire at the National Motorcycle Musuem which has consumed some 60 or 70% of the exhibits, including many unique and irreplaceable machines.
This is not the place to question the whys and wherefores that allowed the fire to start and spread so disasterously but it must raise serious questions in the minds of all interested in the preservation "industry". I am not suggesting that collections such as Duxford or the RAFM are negligent, but clearly every museum must review their precautions. The consequences of a similar disaster at Hendon or Newark (for example) are too dire to contemplate.