I have recently joined the scientific advisory board for the Lifeboat Foundation, a group devoted to "ensuring that humanity adopts the powerful technologies of genetics, nanotechnology, and robotics safely as we move towards the Singularity."
The Lifeboat Foundation is pursuing a number of option to meet it goals, including the promotion of technological relinquishment and helping accelerate the development of defensive technologies including anti-biological virus technology, active nanotechnological shields, and self-sustaining space colonies in case the other defensive strategies fail.
My bio can be found here. I'm in good company as I join the likes of Ray Kurzweil, Michael Anissimov, Eliezer Yudkowsky, Robert A. Freitas Jr., Aubrey de Grey, James Hughes, David Pearce, Seth Shostak, Mike Treder, among many others.
It was the Lifeboat foundation who recently awarded Freitas and Bill Joy the 2006 Guardian Award.