Love and loss can be complicated. If you've shared a romance with all of Facebook – and then it ends – can the company design a way to relieve your break-up pain? How much does a caring symbol help? We talk to Dacher Keltner, an expert on the psychology of emotion, who is a consultant on Facebook's “Compassion” team.
- Dacher Keltner - University of California, Berkeley - @GreaterGoodSC