Happiness is a human construct, an abstract idea with no biological basis. But this is something to be happy about.
The Republican tax plan would ultimately make the current system less progressive while reducing the overall burden, two things research shows make countries less happy.
People are buying more and more things. But does that make them more contented?
Data shows that voters organizing ballot initiatives on issues like marijuana use and plastic bag bans are doing more than creating DIY laws -- they are spreading happiness.