Which innovative advertising approach did National Geographic use in their award-winning 2020 'Endangered Species' campaign that went viral globally?

National Geographic has been at the forefront of nature conservation for decades. In 2020, they launched a groundbreaking advertising campaign to raise awareness about biodiversity loss that garnered international attention and multiple advertising awards. The campaign featured stunning visuals and a powerful message that resonated with audiences worldwide. Test your knowledge about this impactful environmental marketing initiative!

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AR-powered billboards that transformed viewers' reflections into endangered animals when they stood in front of them
Disappearing ink posters that gradually faded to reveal statistics about species extinction rates
Interactive digital ads that released oxygen when viewers engaged with them online
Biodegradable seed-infused magazine inserts that could be planted to grow native endangered plants