Worldwide, how many scientists actually buy into James Hansen's fantasies about 350 ppm of CO2?

Conference of the Century! (Fantasizing about capped 350 ppm CO2) — MasterResource

Well, how else should we describe a conference addressing “The Greatest Challenge in History”? That’s what the 350 Climate Conference, to be held May 2 at Columbia University, calls global warming, which it also asserts is ”likely the greatest threat humanity has ever faced.”

The number “350″ refers to the “safe upper limit” of carbon dioxide (CO2) concentrations in the atmosphere–350 parts per million (ppm)–according to NASA scientist and Columbia University professor James Hansen, who will keynote the conference. Atmospheric CO2 levels today are roughly 385 ppm.

The list of speakers and sponsors looks very sparse. If this is a clear consensus, where's everybody else?