The Pigeon Air Patrol measures nitrogen dioxide in London, which has a high level of air pollution.

Pigeons with backpacks track air pollution - CNN.com

The Pigeon Air Patrol measures nitrogen dioxide in London, which has a high level of air pollution.

Air pollution, Northeastern US  These images, from 2005 and 2011, show that it’s not all bad news. The red areas indicate levels of high nitrogen dioxide, primarily caused by vehicles and coal power plants. These vivid splashes across the map have decreased dramatically, despite higher populations and more cars on the road, thanks to new regulations, technology improvement and economic changes.

Air pollution, Northeastern US These images, from 2005 and 2011, show that it’s not all bad news. The red areas indicate levels of high nitrogen dioxide, primarily caused by vehicles and coal power plants. These vivid splashes across the map have decreased dramatically, despite higher populations and more cars on the road, thanks to new regulations, technology improvement and economic changes.

{   HOW POLLUTED IS YOUR COUNTRY? NASA MAP SHOWS THE CHANGING LEVELS OF NITROGEN DIOXIDE THROUGHOUT THE WORLD   } #DailyMailUK ... "Nasa tracked air pollution trends over the last decade in various regions and 195 cities around the globe.. China, India and the Middle East have seen more air pollution due to their growing economics, it found."..  http://www.dailymail.co.uk/sciencetech/article-3359873/How-polluted-country-Nasa-map-shows-changing-levels-nitrogen-dioxide-world.html#ixzz3uKrOLJZ6

How polluted is YOUR country? Nasa map shows the changing levels of nitrogen dioxide

{ HOW POLLUTED IS YOUR COUNTRY? NASA MAP SHOWS THE CHANGING LEVELS OF NITROGEN DIOXIDE THROUGHOUT THE WORLD } #DailyMailUK ... "Nasa tracked air pollution trends over the last decade in various regions and 195 cities around the globe.. China, India and the Middle East have seen more air pollution due to their growing economics, it found.".. http://www.dailymail.co.uk/sciencetech/article-3359873/How-polluted-country-Nasa-map-shows-changing-levels-nitrogen-dioxide-world.html#ixzz3uKrOLJZ6

Nitrogen dioxide air pollution lessens in parts of US and Europe, increases in Middle East and parts of Asia

Nitrogen dioxide air pollution lessens in parts of US and Europe, increases in Middle East and parts of Asia

London Is a Worse Nitrogen Dioxide Polluter Than Beijing | An E.U.-mandated shift to diesel cars has sent London's NO2 emissions through the roof. "It's a public-health catastrophe," says one prominent campaigner | TIME.com

London Is a Worse Nitrogen Dioxide Polluter Than Beijing

London Is a Worse Nitrogen Dioxide Polluter Than Beijing | An E.U.-mandated shift to diesel cars has sent London's NO2 emissions through the roof. "It's a public-health catastrophe," says one prominent campaigner | TIME.com

When sulfur dioxide, particulate matter, nitrogen dioxide and carbon monoxide decreased markedly month to month, so did deaths from emphysema, asthma and pneumonia. What can you do to breath cleaner air? Dr. Galante has powerful programs that will teach you the specific steps that will help you to become and stay healthier.

When sulfur dioxide, particulate matter, nitrogen dioxide and carbon monoxide decreased markedly month to month, so did deaths from emphysema, asthma and pneumonia. What can you do to breath cleaner air? Dr. Galante has powerful programs that will teach you the specific steps that will help you to become and stay healthier.

Did you know that trees help cleanse the air by intercepting airborne particles, reducing heat, and absorbing such pollutants as carbon monoxide, sulfur dioxide, and nitrogen dioxide? Happy #ArborDay!

A Tree's Importance and Environmental Benefit

Did you know that trees help cleanse the air by intercepting airborne particles, reducing heat, and absorbing such pollutants as carbon monoxide, sulfur dioxide, and nitrogen dioxide? Happy #ArborDay!

What is the 'other carbon dioxide problem'? How are humans driving changes in the chemistry of the ocean, and what might this mean for marine ecosystems in the future?

What is the 'other carbon dioxide problem'? How are humans driving changes in the chemistry of the ocean, and what might this mean for marine ecosystems in the future?

Parts of the capital have already breached EU hourly limits for nitrogen dioxide pollution which causes thousands of premature deaths each year London has already breached annual pollution limits j...

Parts of the capital have already breached EU hourly limits for nitrogen dioxide pollution which causes thousands of premature deaths each year London has already breached annual pollution limits j...

A new NASA report shows decreasing levels of air pollution in the U.S.

New NASA Images Highlight U.S. Air Quality Improvement

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