Teaching Issues and Experiments in Ecology (TIEE) is a collection of peer-reviewed, classroom/ field-tested teaching materials sponsored by the Ecological Society of America. Among these "scientifically sound and pedagogically innovative" teaching materials are a number of particularly well-designed ecology labs for field and classroom. As of February 2003, two of the seven labs on the Web site are complete and ready to download: Ecology of Habitat Contrasts and Environmental Correlates of Leaf Stomata Density. Both are designed for college level courses. Five other labs covering a range of ecology topics will eventually be available, and users may also take advantage of an earlier set of labs from 1993. The resources and materials provided for each lab are incredibly comprehensive. Suffice to say, this Web site is definitely one to bookmark and check frequently for updates.