Which major product design change did National Geographic implement in 1970 that revolutionized their brand recognition globally?

National Geographic is one of the world's most recognized geography-focused brands. Their iconic yellow border has framed countless memorable images and has become synonymous with exploration and discovery. This poll tests your knowledge about a pivotal moment in the brand's visual marketing evolution that helped cement its global identity across diverse markets and platforms.

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Standardizing the yellow rectangular border across all products and publications
Introducing the globe logo with meridian lines
Switching from illustrations to photography on all magazine covers
Adding 'The World and All That's In It' tagline to all products