A list of puns related to "Happy Planet Index"
http://happyplanetindex.org/
Their methods seem like garbage to me, but this is outside of my area of expertise.
https://static1.squarespace.com/static/5735c421e321402778ee0ce9/t/578dec7837c58157b929b3d6/1468918904805/Methods+paper_2016.pdf
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