![](https://www.skeptic.com/wordpress/wp-content/uploads/422-Robert-Zubrin-2x-1120x630.jpg)
Shermer and Zubrin discuss: why not start with the moon? • what it is like on Mars • whether Mars was ever like Earth • how much it will cost to go to Mars • how to get people to Mars • resources on Mars • colonization of Mars • public vs. private enterprise for space exploration • economics, politics, and government on Mars • lessons from the Red Planet for the Blue Planet • liberty in space.