Pollution takes many forms, such as ground, air, and water pollution. To make the environment pleasant to live in, certain methods are needed to clean up pollution or, even better, to prevent it all together. Several technologies and engineering techniques are regularly employed to keep pollution in check.

The Air Pollution Control Technology Handbook (1) takes an in-depth look at many types of systems used in control equipment. Although the link on the page only shows the table of contents, each entry is hyperlinked to the full text. The online version of the Pollution Engineering magazine (2) has news and information about environmental control issues. A monthly publication, it stresses the economic benefits that can be realized with proper practices. Eight environmental technology verification centers can be accessed from this Web site (3). Operated by the US Environmental Protection Agency (EPA), the centers focus on greenhouse gas technology, advanced monitoring systems, water quality protection, air pollution control, and more. Recycling is something that many people do to reduce waste, but few know what the process of recycling involves. This educational site (4) provides a good overview of aluminum, glass, plastic, and polycoat recycling. Brookhaven National Laboratory operates this page (5), which offers extensive information on its environmental research and technology focus areas. Some sections describe work in decontamination and decommissioning, waste form development, and risk assessment. On September 8, 2002, a news report reported that the air pollution in Hong Kong, which is notorious for poor air quality, reached an all-time high in August since monitoring began in 1995. Clear the Air (6) is a project that hopes to reverse this trend by introducing pollution control measures. The project's home page has information on the situation in Hong Kong, as well as facts about the risk of air pollution in general. Another news article (7) describes the recent construction of a computer shredding plant in Chicago. Since computer disposal is a major problem in the US, recycling this technological waste is increasingly important. The operation of the system is quite impressive. The Global Environment Centre Foundation's Environmental Technology Database (8) has specifications and documentation on many types of pollution control equipment and technologies. Much of the information is about Japanese applications.