View full lesson: http://ed.ted.com/lessons/whydosome...
If you are a living, breathing human being, chances are you have felt sad at least a few times in your life. But what exactly is melancholy, and what (if anything) should we do about it? Courtney Stephens details our stillevolving understanding of sadness and even makes a case for its usefulness.
Lesson by Courtney Stephens, animation by Sharon Colman Graham.