Listen Up

How does the American government eavesdrop? Whom does it eavesdrop on? And is the interception of communication an effective means of predicting and preventing terrorist attacks?

These are some of the questions at the heart of the new book "Chatter" by author Patrick Radden Keefe, in which he takes a backstage tour of the secret world of global eavesdropping.

Hear a conversation with Keefe about eavesdropping and the secrecy surrounding ut.

Guests:

Patrick Radden Keefe, author of "Chatter: Dispatches from the Secret World of Global Eavesdropping."