Which sustainable practice has become increasingly common in the publishing industry to reduce waste and carbon emissions?

The publishing industry has been evolving to meet sustainability challenges in recent years. Major publishers and independent bookstores alike have adopted various eco-friendly practices to reduce their environmental footprint while maintaining the magic of literature. Test your knowledge about sustainable innovations that are reshaping how books reach readers in this environmentally conscious era.

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Print-on-demand technology that produces books only when ordered
Releasing all new titles exclusively as digital e-books
Printing all books on stone paper (made from calcium carbonate) instead of wood pulp
Publishing new releases only during quarterly 'batch days' to optimize shipping