Waste Not: A Jewish Environmental Ethic by Tanhum Yoreh (SUNY Press). The Jewish prohibition against wastefulness and destruction is an ecological ethical principle by contemporary Jewish environmentalists. Waste Not is an intellectual history of this concept, offering a detailed and studious analysis of the Jewish prohibition against wastefulness and destruction (bal tash.it), blending close readings from traditional texts, beginning with the Bible, and moving through rabbinic, medieval, and contemporary Jewish environmentalist commentaries. Tanhum Yoreh, Assistant Professor in the School of Environment at the University of Toronto, draws on the study of religion, ethics, and ecological thinking for a timely meditation on a subject deserving the world’s attention. The connection between contemporary environmental thought and Jewish principles creates a foundation for an environmental ethic for today.