Many TEDTalks explore themes of happiness — Stumbling on Happiness‘ Daniel Gilbert, Mattheiu Ricard (who’s been called the Happiest Man on Earth), happy designer Stefan Sagmeister, and many more …

Now a recent story in Newsweek rounds up the latest on happiness’ opposite: sadness. It’s an interesting gloss on the growing happiness industry — and what the story calls “the backlash against the happiness rat race.”