Not sure about what is wrong about an article from 2014. It is not talking about the last JavaScript implementation or AI achievement.
> there is a trend which suggests Americans are growing less happy each year. So maybe in the interim of 4 years the world.
So are you saying that Amricans = World? Please (for example) go to Spain and look about how happiness works differently than America.
I'll have to work on my presentation skills next time.