Which innovative sustainability initiative was pioneered by Oxford University Press for their flagship Oxford English Dictionary in 2019?

The dictionary publishing industry has undergone significant changes to reduce environmental impact while maintaining their core mission of documenting language. This trivia question explores how major dictionary publishers have incorporated sustainability initiatives into their production processes, reflecting the growing intersection of environmental consciousness and linguistic resources. Test your knowledge about how the words we reference are being produced with greater ecological awareness.

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Creating dictionaries using recycled coffee grounds for ink production
Transitioning to plant-based binding adhesives derived from sustainable algae sources
Printing dictionaries exclusively on paper made from invasive plant species
Implementing a carbon-neutral delivery system using electric vehicles powered by dictionary sales profits