The TED talks began in 1984 as a gathering for people in the technology, entertainment and design worlds.
It has since become a way to share new and inspiring ideas, and independently-organized local versions of the talks--called TEDx--have sprung up around the world.
Now Tucson has its own TEDx, largely organized by Lewis Humphreys.
He is holding "Tucson: City Of Healing & Innovation" on December 8, 2012 at the University of Arizona's Gallagher Theater. This TEDx event will feature speakers from the fields of technology and healing.