Table of Contents
Fast Facts
Type | Contributor | Date | |
---|---|---|---|
Associated Press update. | Jun 08, 2023 | ||
Deleted Web site: LiveScience - Pollution Facts & Types of Pollution. | Nov 30, 2022 | ||
Add new Web site: United States Environment Protection Agency - Air Pollution: Current and Future Challenges. | Oct 25, 2022 | ||
Media added. | Oct 19, 2020 | ||
Added information on the recovery of the ozone layer and noted the 2020 atmospheric carbon dioxide concentrations. | Oct 19, 2020 | ||
Media added. | Dec 17, 2019 | ||
Add new Web site: NASA Climate Kids - What causes air pollution? | Nov 27, 2019 | ||
Revised the atmospheric levels of carbon dioxide and added cross-references throughout. | Oct 31, 2018 | ||
Added tables "Criteria air pollutants" and "Important hazardous air pollutants (air toxics)." | Oct 31, 2018 | ||
Media added. | Oct 31, 2018 | ||
Add new Web site: Environmental Pollution Centers - What is Air Pollution? | Mar 15, 2018 | ||
Add new Web site: ThoughtCo. - A Definition of Air Pollution. | Mar 13, 2018 | ||
Add new Web site: Natural Resources Defense Council - Air Pollution: Everything You Need to Know. | Jan 12, 2018 | ||
Add new Web site: LiveScience - Pollution Facts & Types of Pollution. | Dec 18, 2017 | ||
Add new Web site: National Institute of Environmental Health Sciences - Air Pollution. | Aug 31, 2011 | ||
Add new Web site: Buzzle.com - Air Pollution. | Aug 31, 2011 | ||
Table of criteria air pollutants added. | Feb 18, 2010 | ||
Table of hazardous air pollutants added. | Feb 16, 2010 | ||
Article revised and updated. | Jan 22, 2010 | ||
Added new Web site: National Geographic - Air Pollution. | Apr 19, 2009 | ||
New article added. | Feb 19, 2009 |