TOXMAP, the National Library of Medicine’s popular Web site for in-depth information about chemicals in the environment, their geographic distribution and health effects, was revamped in time for the 36th Earth Day, on April 22.

By city, state or ZIP code, users can pore through annual Environmental Protection Agency (EPA) industrial emissions data about the substances being released into the water, earth and air, as well as investigate EPA Superfund site info, and Centers for Disease Control and Prevention (CDC) and National Cancer Institute mortality data. There are also links to NLM’s bank of toxicology and environmental health references, and data on hazardous chemicals in the TOXNET databases.