In the Happy Planet Index's ranking of the unhappiest and least environmentally sustainable countries in the world from 2021, Qatar ranked highest with a score of only 24.3. Even though Qatar is a rich country with high scores of well-being and life expectancy, its ecological footprint is extremely poor, pulling down its index score. The Happy Planet Index measures life expectancy, experienced well-being, inequality of outcomes, and ecological footprint in order to determine the countries that are able to deliver the longest and happiest, but also most sustainable lives to their residents. The Index works to measure efficiency by ranking countries relative to how they offer their people long and happy lives, for each unit of environmental output.
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Happy Planet Index. (October 29, 2021). Happy Planet Index ranking of the worst countries for offering happy and sustainable lives to their people in 2021 [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 28, 2026, from /statistics/236082/happy-planet-index-of-unhappiest-countries/
Happy Planet Index. "Happy Planet Index ranking of the worst countries for offering happy and sustainable lives to their people in 2021." Chart. October 29, 2021. ÌÇÐÄÆƽâ°æ. Accessed July 28, 2026. /statistics/236082/happy-planet-index-of-unhappiest-countries/
Happy Planet Index. (2021). Happy Planet Index ranking of the worst countries for offering happy and sustainable lives to their people in 2021. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 28, 2026. /statistics/236082/happy-planet-index-of-unhappiest-countries/
Happy Planet Index. "Happy Planet Index Ranking of The Worst Countries for Offering Happy and Sustainable Lives to Their People in 2021." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 29 Oct 2021, /statistics/236082/happy-planet-index-of-unhappiest-countries/
Happy Planet Index, Happy Planet Index ranking of the worst countries for offering happy and sustainable lives to their people in 2021 ÌÇÐÄÆƽâ°æ, /statistics/236082/happy-planet-index-of-unhappiest-countries/ (last visited July 28, 2026)
Happy Planet Index ranking of the worst countries for offering happy and sustainable lives to their people in 2021 [Graph], Happy Planet Index, October 29, 2021. [Online]. Available: /statistics/236082/happy-planet-index-of-unhappiest-countries/
