A Scientist's Warning

Humans could face extinction in this century if we do not change our ways. The list of dangers has never been longer. Global warming, biological terrorism, or even a runaway lab experiment could bring about the demise of life on earth, warns Sir Martin Rees, Britain's Astronomer Royal.

Theologian and ethicist Ted Peters responds. How will our species respond to these ever increasing threats? Is it possible to change our ways? A scientist and a theologian wrestle with humanity's most pressing issue.

Guests:

Sir Martin Rees, Britain's Astronomer Royal and Professor of Astronomy at Cambridge University. Author of "Our Final Hour, A Scientists Warning"

Ted Peters, professor of theology at the Center for Theology and the Natural Sciences and at the Pacific Lutheran Theological Seminary.