Species conservation is an important issue worldwide. The market for monkeys consumed as food on Bioko Island, Equatorial Guinea, is modeled as a bargaining game. The bargaining set-up leads to the conclusion that black colobus are being over-hunted. Using daily data an empirical density is fit...

Public security agency response to a call for emergency service is a commons good. As consumers demand more of the commons good there is increased congestion. Police services as a commons good are modeled using the uncertainty about which calls for service are bona fide. The results are that...