Journalist Jon Mooallem noticed that his young daughter was always surrounded by wild animals: butterflies on her pajamas, a stuffed toy owl, and beavers in her bedtime stories. But these romantic portrayals, he says, hid a harsh reality. Scientists estimate half of all species could be gone by the turn of the century. So he embarked on his own journey to track down three endangered animals, and discovered the extreme -- even futile -- lengths humans go to save them. Jon Mooallem discusses his book, "Wild Ones," and the complex intersections of man and nature.

A new edition of the most widely used psychiatric guide to mental disorders -- "The Diagnostic and Statistical Manual of Mental Disorders" -- was released this past weekend in San Francisco at a meeting of the American Psychiatric Association. The manual has a big impact on public health, including what insurance companies will cover, the drugs that regulators will approve, and even which children will receive special education services. But critics say that the manual is outdated and question the validity of several new diagnoses.