Timothy C. Weiskel, director of the Harvard Seminar on Environmental Values at the Harvard Divinity School, has provided a massive bibliographic resource for "the facilitat[ion of] interdisciplinary research and public discussion of the ethical issues embedded in the full range of the environmental concerns of our day." The core of the site is a set of twenty-nine bibliographies originally produced as research aids for environmental ethics seminars at Harvard. These include class bibliographies (sixteen, of which the most massive is Core Sources on Environmental Ethics), subject bibliographies (seven, including The Ethics of Altruism, The Ethics of Colonialism, and The Case of NAFTA), and six occasional bibliographies (including Environmental Justice and Sources for the Study of Environmental Ethics). Also included is a short title topics list and a subject category guide derived from searches of the HOLLIS Online Public Access Catalog. Taken together, these guides provide a magnificent bibliographic portal into the topic of environmental ethics.