Here's a fascinating study of fish group behavior that may shed light on how we make some of our instinctive decisions when we're part of a crowd.

An intriguing Australian study has been following 1500 seniors for ten years, and concluded that having a close group of friends impacts significantly on longevity -- but having close relationships with your children or other relatives doesn't! Looks like friends provide a type of emotional support that family doesn't.

A new therapy for complicated grief has proved more effective than standard depression therapy. "Complicated grief" is a disorder that may occur in the aftermath of losing a loved one. It's characterized by: persisting more than 6 months after the death; a sense of disbelief regarding the death; anger and bitterness over the death; recurrent pangs of painful emotions, with intense yearning and longing for the deceased; preoccupation with thoughts of the loved one, often including distressing intrusive thoughts related to the death.