Green Vehicle Guide / US EPA
The Green Vehicle Guide is maintained by EPA's Office of Transportation and Air Quality (OTAQ). For more information, view the Site Map or Get E-mail Updates The U.S. Environmental Protection Agency's Green Vehicle Guide provides vehicle ratings ... [... more]
Environmental Protection Agency |
Air and Radiation / US EPA
The Office of Air and Radiation (OAR) develops national programs, technical policies, and regulations for controlling air pollution and radiation exposure. OAR is concerned with pollution prevention and energy efficiency, indoor and outdoor air ... [... more]
Environmental Protection Agency |
Ozone Generators that are Sold as Air Cleaners
There is a large body of written material on ozone and the use of ozone indoors. However, much of this material makes claims or draws conclusions without substantiation and sound science. In developing Several brands of ozone generators have EPA ... [... more]
Environmental Protection Agency |
Table of Contents:
How Does the Depletion of "Good" Ozone Affect Human Health and the Environment? How Does "Bad" Ozone Affect Human Health and the Environment? The "good" ozone layer in the stratosphere protects life on Earth from the Sun's [... more]
Environmental Protection Agency |
Phaseout Schedule for HCFCs Including R-22
In 1987 the Montreal Protocol, an international environmental agreement, established requirements that began the worldwide phaseout of ozone-depleting CFCs (chlorofluorocarbons). These requirements were later modified, leading to the phaseout in ... [... more]
Environmental Protection Agency |
The Process of Ozone Depletion
The ozone depletion process begins when CFCs and other ozone-depleting substances (ODS) are emitted into the atmosphere(1). Winds efficiently mix the troposphere and evenly distribute the gases. CFCs are extremely stable, and they do not dissolve ... [... more]
Environmental Protection Agency |
Designations Process
Answers to the following questions can be found by scrolling down or by clicking on the question of interest. If you need further information, please use the contact information provided. Children, people with lung disease, and people who work or ... [... more]
Environmental Protection Agency |
Brief Questions and Answers on Ozone Depletion
The ozone layer is a concentration of ozone molecules in the stratosphere. About 90% of the planet's ozone is in the ozone layer. The layer of the Earth's atmosphere that surrounds us is called the troposphere. The stratosphere, the next higher ... [... more]
Environmental Protection Agency |
Ozone Depletion Glossary
In order to understand information about ozone depletion, it is important to know several terms and acronyms. We've listed them below. Aerosols are emitted naturally (e.g., in volcanic eruptions) and as the result of human activities (e.g., by ... [... more]
Environmental Protection Agency |
EPA SunWise for Kids: Ozone Layer
The ozone layer forms a thin shield high up in the sky. It protects life on Earth from the sun's ultraviolet (UV) rays. In the 1980s, scientists began finding clues that the ozone layer was going away or being depleted. This allows more UV ... [... more]
Environmental Protection Agency |
On the Trail of the Missing Ozone
Produced by EPA's Region 9 Office in San Francisco, California, this book provides an introduction into why we need the ozone layer, the causes of ozone depletion, and some of the actions the world is taking to correct the problem. We hope you ... [... more]
Environmental Protection Agency |
Ground-level Ozone / US EPA
EPA significantly strengthens the National Ambient Air Quality Standards for ground-level ozone. The AIRNow Web site offers daily air quality forecasts for ozone pollution as well as real-time air quality conditions for over 300 cities across the ... [... more]
Environmental Protection Agency |
