The former leader of the Bosnian Serbs and one of the most wanted men in the world is arrested in Belgrade. We look at the legacy of Radovan Karadzic — charged with genocide and on the run for nearly 13 years. Our guests are Neil MacDonald of the Financial Times; John Burns of the New York Times, who covered the war in the Balkans and interviewed Karadzic; and poet Chris Merrill, author of "Only the Nails Remain: Scenes from the Balkan Wars." Merrill heads the International Writing Program at the University of Iowa.

When you deal with new technology it's one thing but what happens when a brain surgeon encounters what she calls the fiddle factor. Dr. Katrina Firlik says the complex technology available in the operating room isn't always as useful as simply running your finger over the surface of the brain to find a tumor. Dr. Firlik's essay about the fiddle factor appears in the August issue of Technology Review.

Your turn to sound off on what you heard on Here and Now.

We speak with Nanette Burstein, director of the new documentary "American Teen." The film takes an intimate look at the lives of 5 Warsaw Indiana high school students during that most eventful time: senior year.