Published on 2008-10-07 by John Collins. Please follow me on Twitter for more:
Dr. Christopher P. McKay gives a highly technical but visually arresting presentation to Google about the geology of Mars, based on the discoveries made by the Phoenix lander:
I started reading Blue Mars recently, the third and final part of the trilogy by Kim Stanley Robinson, that focuses heavily on many of the themes discussed in this presentation. Well worth reading if you have any interest in the terra forming of Mars.