From the inbox:
FYI, the top seven universities in environmental economics, as rated by REPEC are
#1 -- MIT
#2 -- Universitys of Zurich
#3 -- Harvard
#4 -- Free University, Amsterdam
#5 -- University of California, Santa Barbara
#6 -- University of Maryland
#7 -- Columbia University
If RFF were a university, it would be #4.
See http://ideas.repec.org/top/top.env.html
FYI, I graduated from #6. That may not help the ranking.