About the Ozone Secretariat — information on international ozone-related agreements, from the United Nations Environment Programme.

Air and Health Activities — activities related to air pollution, including an ozone preparation activity, from the University of Arizona Center for Toxicology Southwest Environmental Health Sciences Center Community Outreach and Education Program Educational Resources.

Atomspheric Chemistry Data & Resources — A comprehensive site from NASA. Be sure to follow the "Educational Resources" link and visit the section Ozone and the Atmosphere.

Environmental Effects of Ozone Depletion — 1996 report from the United Nations Environment Programme, hosted by the U.S. Global Change Information Office.

Global Climate Change Research Explorer — comprehensive site allowing students to explore many aspects of global climate change, from San Francisco's Exploratorium.

Green Chemistry — an educational program of the American Chemical Society.

Livng at the Mercy of the Sun — news story about the high risk of skin cancer in a Chilean town at the edge of the Antarctic ozone hole, from the BBC.

Nobel Poster in Chemistry 1995 — an online presentation, adapted from the Nobel Foundation's poster dealing with the prize-winning science of Paul Crutzen, Mario Molina and F. Sherwood Rowland, from the Nobel e-Museum

Nobel Poster in Chemistry 1999 — learn about the work of Egyptian chemist Ahmed H. Zewail. Zewail is a pioneer in the field of "femtochemistry," that is, using pulsed lasers to make "motion pictures" of chemical reactions to study how they take place and the short-lived molecules that exist during reactions. Techniques of this kind are crucial in the work of Joseph Francisco. From the Nobel e-Museum.

On the Trail of the Missing Ozone — an online comic book from the Environmental Protection Agency.

The Ozone Depletion Story — brief history of CFCs and ozone depletion gtom the Natural Resources Defense Council.

Ozone Reality Check — from Friends of the Earth.

Global Change — online magazine from the Pacific Institute for Studies in Development, Environment, and Security.

The Petition: A Global Warming Case Study — created by Bruce C. Allen and Clyde F. Herreid, State University of New York at Buffalo.

The Science & Environmental Policy Project

Stratospheric Ozone — NASA's comprehensive electronic textbook.

Stratospheric ozone depletion (Antarctic, Arctic, and global) — from the National Oceanic and Atmospheric Administration.

Year in Review 1994: world-affairs — update to Britannica.com's Antarctica entry, concerning the ozone hole over the continent.