Which innovative marketing campaign featured digital billboards that changed in real-time to show the actual declining population numbers of endangered species?

Conservation organizations use sophisticated marketing strategies to raise awareness and funds for protecting endangered species. These campaigns often employ emotional appeals, striking imagery, and innovative approaches to connect with potential donors and supporters. Test your knowledge about one of the most successful wildlife conservation marketing campaigns in recent history!

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WWF's 'Last Selfie' Snapchat campaign with disappearing endangered animals
The 'Counting Down to Extinction' campaign by the International Union for Conservation of Nature
National Geographic's 'Photo Ark' portrait series of endangered species
The 'Empty the Cages' interactive digital campaign by PETA