Which dictionary publisher launched the first major 'Carbon-Neutral Dictionary' initiative, offsetting its entire printing footprint while funding endangered language documentation?

In our increasingly digital world, language preservation has become a crucial sustainability initiative. Dictionary companies have taken various approaches to document, preserve, and revitalize endangered languages. This poll tests your knowledge about a groundbreaking sustainability project that merged traditional lexicography with modern conservation efforts to save linguistic diversity. How familiar are you with these innovative approaches to language preservation?

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Oxford University Press, with their 'Sustainable Lexicon Project' in 2018, documenting 50 endangered languages while offsetting 100% of printing emissions
Merriam-Webster, through their 'Green Word Initiative' in 2017, planting one tree for each new word added to their dictionaries
Collins Dictionary, via their 'Language Footprint Reduction' program in 2019, switching to bamboo paper and funding linguistic fieldwork
Cambridge University Press, with their 'Zero Impact Lexicography' campaign in 2016, using recycled materials and solar-powered printing facilities