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Explore the Greendex
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2012 Survey Results
See how your behavior stacks up against consumers in other countries on this interactive map.
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Greendex Calculator
Figure out how sustainable your own behavior is. Calculate your personal Greendex.
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About the Study
Learn more about the study components and methodology of this multiyear survey.
Greendex Quizzes
Are you as savvy about the environment as you think? Take these quizzes to find out.
@NatGeoGreen on Twitter
Tweets by @NatGeoGreenAdvertisement
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Explorer Moment: Ray of Hope
Biologist Andrea Marshall leads her team in discovering new and conserving known manta ray species.
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Sylvia Earle on Women in Science
Sylvia Earle reflects on her scientific career and on gender obstacles she faced along the way.
The Great Energy Challenge
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What Is the Great Energy Challenge?
The Great Energy Challenge is a National Geographic initiative to help you understand our current energy situation. Explore the GEC to figure out and trim your carbon footprint.
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Meter Your Personal Energy
See how you measure up against others, and how changes at home or in travel choices could do tons to protect the atmosphere.
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Quiz: What You Don't Know About Energy
How much do you know about the power that keeps you cool in summer, cooks your meals every evening, and illuminates this computer screen?
