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Nic Marks thinks quality of life is measurable, and that true contentment comes not from the accumulation of material wealth but from our connections with others, engagement with the world, and a sense of autonomy. This isn't just theory: a pioneer in the field of well-being research, Marks creates statistical methods to measure happiness, analyzing and interpreting the evidence so that it can be applied to such policy fields as education, sustainable development, healthcare, and economics.

The Happy Planet Index reveals the ecological efficiency with which human well-being is delivered

The index combines environmental impact with human well-being to measure the environmental efficiency with which, country by country, people live long and happy lives. Learn about the ideas behind the HPI, how it is calculated, why we need it and what it can teach us.

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