The C ryonics Institute. The A merican Humanist Association. The E xtropy Institute, for extropian transhumanism. A preliminary electronic incarnation of the Idea Futures concept.
People bet credibility points on various fun hypotheses and future events.
The F oresight Institute. The L ife Extension Foundation. P rincipia Cybernetica. An encyclopedic site for everything related to cybernetics. The Singularity Institute for Artificial Intelligence.