Terry Gross

Biologist Robert Sapolsky. He's one of the first researchers to chart the effects of chronic stress on the brain in the animal kingdom and in humans. He adds a touch of humor to his findings, as well. His new book is called "Why Zebras Don't Get Ulcers: An Updated Guide to Stress, Stress-Related Diseases, and Coping." (W.H. Freeman and Co.) It's a revised version of his 1994 publication.

We discuss the situation in Kosovo with Miranda Vickers, Britain's leading historian of the Albanian people in general and Kosovo in particular. The conflict continues between Serbs and Albanians for control of the region. Vickers is an Albanian analyst for the International Crisis Group set up after the Dayton accords. Her new book is called "Between Serb and Albanian: A History of Kosovo." (Columbia University Press)

The health of the population in Kosovo is in jeopardy as the fighting there continues. We speak with Keith Ursel, the Doctors Without Borders coordinator of the mobile clinic program. During the day, temperatures rise to 100 degrees Fahrenheit. The mobile team has gone to treat several thousand people hiding in the Kosovo hills. The refugees have no shelter, very little food or drinking water.