  The original article expressed the special values of the zeta function of a
variety over a finite field in terms of the $\hat{Z}$-cohomology of the
variety. As the article was being completed, Lichtenbaum conjectured the
existence of certain motivic cohomology groups. Progress on his conjecture
allows one to give a beautiful restatement of the main theorem of the article
in terms of $Z$-cohomology groups.
