In what year did National Geographic adopt its iconic yellow rectangular border logo that has become the symbol of the brand worldwide?

National Geographic has been bringing the world to our doorsteps since 1888, but its famous yellow rectangle logo has its own fascinating history. This poll tests your knowledge about one of geography's most recognizable brands and how its visual identity has evolved while maintaining its mission to explore and protect our planet. Can you correctly identify when National Geographic adopted its now-famous yellow rectangle logo design that has become synonymous with global exploration and geographic education?

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

1903 - The same year the Society began awarding its first research grants
1915 - When Gilbert H. Grosvenor became the first full-time editor of the magazine
1970 - As part of a complete brand redesign during the environmental movement era
1988 - To celebrate the 100th anniversary of the National Geographic Society