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.

How to Feed Our Growing Planet

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    Feed the World

    National Geographic explores how we can feed the growing population without overwhelming the planet in our food series.

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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?