BONUS: Born Of Ice And Fire: How Glaciers And Volcanoes (With A Pinch Of Salt) Drove Animal Evolution

BONUS DISCUSSION: Dr. Graham Shields, professor of geology at University College London, joins the "ROI" panelists to discuss: Born Of Ice And Fire: How Glaciers And Volcanoes (With A Pinch Of Salt) Drove Animal Evolution.

The host for the 656th edition in this series is Jay Swords, and the history buff is Rick Sweet.

Opinions expressed in this program are those of the hosts and the guest(s), and not necessarily those of KALA-FM or St. Ambrose University. This program is recorded at KALA-FM, St. Ambrose University, Davenport, Iowa, USA!