charlottledarwin: Why Old Books Smell Good “Lignin, the stuff that prevents all trees from adopting the weeping habit, is a polymer made up of units that are closely related to vanillin. When made into paper and stored for years, it breaks down and

charlottledarwin: Why Old Books Smell Good “Lignin, the stuff that prevents all trees from adopting the weeping habit, is a polymer made up of units that are closely related to vanillin. When made into paper and stored for years, it breaks down and

charlottledarwin: Why Old Books Smell Good “Lignin, the stuff that prevents all