This site provides real-world issues as well as the scientific research and technology used to support the EPA's mission to protect human health and safeguard the natural environment.

Find out why coal causes pollution and several techniques that can be used to clean it up.

Students are presented with examples of the types of problems that environmental engineers solve, specifically focusing on air and land quality issues. Air quality topics include air pollution sources, results of poor air quality...

Use national park webcams to determine how regional haze forms and reduces visibility. You can also explore the differences between smog and haze to determine some of the negative economic impacts regional haze can create.

Humans impact the physical environment in many ways: overpopulation, pollution, burning fossil fuels, and deforestation. Changes like these have triggered climate change, soil erosion, poor air quality, and undrinkable water. These...

Learners are introduced to the respiratory system, the lungs and air. They learn about how the lungs and diaphragm work, how air pollution affects lungs and respiratory functions, some widespread respiratory problems, and how engineers...

Explains what gasoline is and the different terms used for it, describes how it is produced, and what effects different properties of a gasoline can have on its performance. Also discusses how the composition of gasoline varies depending...

Articles, videos, and photos on the topic of world conservation such as green health, air quality, and climate change.

The EPA defines and explains how radon is a serious indoor air pollutant. Content includes information on how to test for radon, where it is most commonly found, all possible health effects of radon, and how to fix the problem in your home.

Students learn how rooftop gardens help the environment and the lives of people, especially in urban areas. They gain an understanding of how plants reduce the urban heat island effect, improve air quality, provide agriculture space,...

Comprehensive site on climate change includes basic information on greenhouse gas emissions, health and environmental effects, regulatory initiatives and what people can do at home, on the road, at the office and at school to reduce...

This site reviews the effects of agricultural development, urban and industrial development, drainage of the land surface, modifications to river valleys, and modifications to the atmosphere have on ground water and surface water.

This article explains what acid depositions are and the serious effects they have on the environment, as well as what the Alberta government is doing to combat the problem.

High level discussion of environmental change in a twenty year period. Look for CFC's as you scroll down to the heading "Indicators of the environment."

Explore more about acid rain. This is an online experiment to observe "The influence of acid rain on plant growth." Find out how acid rain can damage your plants directly and indirectly.

The EPA discusses the actions the government agencies are taking to reduce acid rain.