Sometimes environmental economist and co-author (and my graduate school office-mate), Paul Chambers, will be rock climbing for charity:
Paul Chambers and Jeremy Collins will be doing a climb to raise funds for a Habitat for Humanity build in Costa Rica ($5,000 US builds a 42 sq meters or less than a 500 sq ft house). The climb will be in the spring of 2007.
If you are interested in making a donation, here is the URL: http://climb4habitat.org.
The illustration to the right is of Paul Chambers, by Jeremy Collins.