Lichens and the tiny animals called tardigrades ("water bears") that live in them are sensitive to certain air pollutants such as sulfur dioxide. Accordingly, they can be useful bioindicators of air quality. Designed to engage students in the scientific process, this Web site, produced by PathFinder Science, offers a learning program based on lichen cover and tardigrade density and diversity on...

The Ambient Air Monitoring System: Near Real Time Data Web site is presented by the New York State Department of Environmental Conservation. The collected data includes pollutants such as sulfur dioxide, ozone, carbon monoxide, and methane among others, as well as all common meteorological data. Records are collected and reported hourly, and can be viewed by parameter or by station, which are...

Developed by the Scottish Executive Development Department Environment Statistics Branch, the Scottish Environment Statistics Online (SESO) Web site provides those users interested in Scotland's environment with valuable information that spans a wide range of years. Especially heavy with data in the last ten years, SESO covers numerous topics: Climate Change and the Ozone Layer, Air Quality,...