To be able to do that we first need to understand what exactly human activities have been responsible for.
To date what we've done is, taken a resource from the earth, used it to make whatever's useful and ended the process there. We haven’t had to think about what by-product we’ve created.
All too often this has been a pollutant that poisons our air, waters and soil and damages our health.
6. This article tells us why certain gases like nitrogen dioxide are deadly dangerous for our health. It helps us understand why these gases shouldn’t be the end product of our activities.
Nitrogen dioxide (NO2) is a brownish, highly reactive gas that is present in all urban atmospheres. It is one of the several nitrogen oxides - NOx - but one of the most prominent air pollutants. This reddish-brown toxic gas has a characteristic sharp, biting odor and is like a brown haze hanging over our cities.
|Photo by Thunderror http://www.flickr.com/photos/thunderror/2463862190/in/photostream|
Nitrogen and oxygen in the air react with each other under these high temperatures to form oxides of nitrogen (NOx).
Why nitrogen dioxide is toxic to life
Prolonged exposure to nitrogen dioxide can irritate the lungs and lower a person's resistance to respiratory infections such as influenza. Symptoms of bronchitis in asthmatic children increase with long-term exposure to NO2. Reduced lung function growth is also linked to NO2
The brownish gas reacts with moisture in the air to form nitric acid, which can corrode buildings and monuments, and toxic organic nitrates, which contribute to acid rain and the acidification of lakes, rivers, and streams. Nitrogen dioxide also plays a major role in producing particulate matter (PM) and ground-level ozone or smog.
Some other gases that are harmful to humans:
Carbon Monoxide : http://nevermindyaar.blogspot.com/2011/05/why-some-gases-are-deadly-dangerous-co.html
Carbon Dioxide : http://nevermindyaar.blogspot.com/2011/05/why-some-gases-are-deadly-dangerous-co2.html
Sulphur Dioxide : http://nevermindyaar.blogspot.com/2011/05/why-some-gases-are-deadly-dangerous-so2.html
Nitrogen Dioxide : http://nevermindyaar.blogspot.com/2011/05/why-some-gases-are-deadly-dangerous-no2.html
Acid Rain: http://nevermindyaar.blogspot.com/2011/11/why-acid-rain-is-deadly-dangerous.html
Particulate Matter : http://nevermindyaar.blogspot.com/2011/11/why-some-gases-are-deadly-dangerous-pm.html
Ground Level Ozone and Odours : http://nevermindyaar.blogspot.com/2011/05/why-some-gases-are-deadly-dangerous-o3.html