THE HEART IS A LONELY CETECEAN

In an op-ed piece for The New York Times, psychology professor Clive D.L. Wynne writes the sad tale of Keiko, the killer whale made famous by the feel-good movie "Free Willy."

The effort to return Keiko to the wild took seven years and cost $20 million. But the whale, having been socialized to perform tricks for food, kept returning to areas populated by people, apparently lonely and seeking human contact once again.

Keiko died Dec. 12 of pneumonia.