Advice on the Flu.

Medical writer Robin Marantz Henig is a frequent contributor to The New York Times Magazine, the Washington Post, Mirabella, and Vogue. Her new book, "A Dancing Matrix" is about the work being done to understand viruses. The field has taken on new urgency since the spread of the AIDS virus. Hening says scientists have realized that emergence of a new virus is not as rare as previously though, and that it's caused mostly by human error rather than genetic mutation.

Walter Gunn is an epidemiologist at the Centers for Disease Control in Atlanta. He talks to Terry about the flu season, which came early this year. Americans are battling three different strains of the virus. He also talks about whether or not it's worth getting a vaccine.

Clancy Martin lives with two incompatible ideas in his head: "I wish I were dead – and I'm glad my suicides failed." He says he wrote his book especially for people struggling with suicidal thoughts.