ASU is hosting the National Academy of Science's Planetary Decadel Survey for exploration of Mars during the 2013-2022 period and the proceedings are open to the public. You can watch the webcast of events at http://nasa-nai.acrobat.com/psdecadal/. Audio is at (866) 606-4717; use access code 7078222. [right, gullies at edge of Hale Crater. Credit UA HiRISE camera]
The meeting is chaired by ASU geologist Philip Christensen and runs through Friday.