sustainability index
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A New Way to Rank Countries on Successful Aging
Is there a comprehensive way to define successful aging? Ng Kah Long analyzed existing population indexes before choosing to construct his own.
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A Sustainability Indicator to Compare the Bike Friendliness of U.S. Cities
An index created by a student would measure how well cities are encouraging bicycling through infrastructure, safety, and clean air.
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How We Can Make Ports More Sustainable — And Why it Matters
An index created by a Sustainability Science student quantifies the major environmental impacts of shipping hubs.
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This Index Measures Progress and Sustainability Better Than GDP
By accounting for human, social, and natural resources, the Inclusive Wealth Index can help guide sustainable development.
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Sustainability Measurement in China: Fostering a Race to the Top
The Research Program on Sustainability Policy and Management recently released the China Sustainable Development Indicator System, a new sustainability indicator framework and annual ranking of the sustainability performance of Chinese cities.

The first Earth Day in 1970 ignited a movement to stop polluting our planet. Today, our scientists and experts are tackling the most pressing challenges to achieve real-world impact. This Earth Day, join us in our commitment to realizing a just and sustainable future for our planet. Visit our Earth Day website for ideas, resources, and inspiration.
