This week's seminar speaker, David D. Hart, has thought a lot about a question that has much concerned those of us in this seminar: If the evidence of climate change (or biodiversity loss, or destruction of ecosystem services or other major issues) is so freaking clear, what do we have to do to get the public to support doing something about it before it's too late, if it isn't already. Here's a link to a recent paper in which Hart writes some about this issue and one possible solution:

http://www.eeb.uconn.edu/people/capers/HartCalhoun2010.pdf

bob