The smell of old books could help preserve them

ScienceDaily
Nov 13, 2019, 11:20 am96 pts
Old books give off a complex mélange of odors, ranging from pleasant (almonds, caramel and chocolate) to nasty (formaldehyde, old clothes and trash). Detecting early signs of paper degradation could help guide preservation efforts, but most techniques destroy the very paper historians want to save. Now,…

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