Emissions
Emissions is the term used to describe the gases and particles which are put into the air or emitted by various sources. Sources include factories and electric power plants, cars, trucks, lawn mowers, airplanes and anything else that moves and puts pollution into the air.
The amounts and types of emissions change every year. These changes are caused by changes in the economy, industrial activity, technology improvements, traffic and many other factors. Air pollution regulations and emission controls also have an effect. The EPA is mainly concerned with emissions which are or could be harmful to people, specifically: carbon dioxide (CO2), carbon monoxide (CO), lead (Pb), nitrogen dioxide (NO2), ozone (O3), particulate matter (PM) and sulfur dioxide (SO2).
In 1970, the U.S. Congress passed Clean Air Act (CAA) Amendments which set into motion a nationwide effort to improve the country's air quality. Since then, other laws and regulations have been added, along with efforts and policies developed and enacted by countries worldwide. (Source: EPA / Photo: milehightraveler/iStockphoto)
Articles about Emissions
Tue, Feb 07 2012 at 2:27 PM EST
Airlines struggle to meet the carbon emissions laws enacted by both their home countries and Europe. Some have called for a global set of standards.Thu, Feb 02 2012 at 1:20 PM EST
As California's new Advanced Clean Cars rules push electric vehicles one step closer to the mass market, could the smart grid be the sequel to 'California emissions'?Tue, Jan 24 2012 at 3:23 AM EST
Energy-related CO2 emissions will be 7 percent lower than their 2005 level of nearly 6 billion metric tons in 2020, according to new government data.Thu, Jan 12 2012 at 11:32 AM EST
Two Georgia power plants are top carbon dioxide emitters for 2010, according to new website that looks at greenhouse gas emissions from large facilities like power plants, refineries and landfills.Mon, Jan 09 2012 at 10:09 AM EST
Study: The causes of ice ages are unknown, but changes in the Earth's atmosphere and shifts in its orbit are thought to contribute.Fri, Dec 30 2011 at 2:03 PM EST
Regulations would've mandated fuel refiners and producers to lower their carbon emissions by 10 percent by 2020.Mon, Dec 12 2011 at 9:27 PM EST
Canada breaks the news upon returning from climate talks in Durban, where countries agreed to extend Kyoto for 5 years and hammer out a new deal.Sun, Dec 11 2011 at 5:06 PM EST
As carbon storage plans collapse, the coal industry turns to enhanced oil recovery practices in an effort to offset their C02 emissions.Thu, Dec 08 2011 at 3:34 PM EST
The 5th annual Climate Counts Company Scorecard Report is out and Unilever knocks Nike out of the top spot.
Tue, Dec 06 2011 at 3:32 PM EST
The Protocol's first round of emissions pledges by rich countries expires next year. By design, developing nations are exempt from its obligations.- 1. Recipes
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