Earth Core Probe

This week, a fake "dirty bomb" was detonated in Seattle and a mock biological attack was launched in Chicago, both part of a terrorism drill. Join guest host David Kestenbaum and guests for a discussion about the simulated terrorism attacks. Plus, a discussion about a plan to send a probe on a journey to the center of the earth, and the latest on SARS from China.

Guests:

David Stevenson
*George Van Osdol Professor of Planetary Science, California Institute of Technology, Pasadena, Calif.