http://rethinkingpossibilism.blogspot.co.uk/
Looks much nicer that way (and doesn't really take any more time than posting it on here).
In brief:
Possibilism, as opposed to environmental determinism, is a concept perhaps better known to writers of disciplinary textbooks than debaters of cutting edge theory. This session is motivated by the conviction that, given the geopolitical challenges of the Anthropocene, this should change.------
*That's Royal Geographical Society/Institute of British Geographers, for the uninitiated.