Which innovative packaging change did National Geographic implement in 2018 as part of their 'Planet or Plastic?' campaign?

National Geographic's shift to a more sustainable business model made headlines in 2018 when they launched a major campaign against plastic pollution. This initiative not only transformed their brand image but also influenced how nature-focused companies approach environmental responsibility in their product development and marketing. Test your knowledge about this pivotal moment in natural product marketing history!

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They replaced their magazine's plastic wrapper with a paper alternative made from renewable materials
They launched a line of aluminum water bottles to replace their previously sold plastic bottles
They introduced biodegradable plastic made from algae for all their products
They eliminated packaging entirely by shifting to digital-only subscriptions