"... 71% of institutions had already experienced deterioration in their digital print collections."Air pollution is clearly part of the problem. See the newsletter at http://imagepermanenceinstitute.createsend4.com/t/ViewEmail/y/27EEDACF6FB6C8BA/D8B2FED31F1CA2D8B3138EAD4DECE712 Paulwww.PaulRoark.com