The most important element for life on our planet Earth is the air we breathe. There is nothing more urgent than a need for a clean air policy; with priority given to major cities with a polluted air problem. This polluted air is often trapped by temperature inversions. All towns and cities where there is a predominance of internal combustion engines running with less efficient catalytic exhaust convertors are at risk.
Smog [‘smoke’ +’ fog’] is the brownish haze that pollutes our air, particularly over cities in the summer. Smog can make it difficult for some people to breathe and it greatly reduces how far we can see through the air. The primary component of smog is ozone, a gas that is created when nitrogen oxides (NOx) react with other chemicals in the atmosphere, especially in strong sunlight. No is produced whenever we burn something, such as coal in a power plant or gasoline in a car’s engine.
Nitrogen Oxides (NOx ) Sources
All greenhouse gases are dangerous to the environment. The most prevalent greenhouse gas is carbon dioxide. Carbon dioxide and other greenhouse gases are released into the atmosphere by agricultural practices and by the burning of fossil fuel. All of these gases are harmful to the environment.
What are the risks? In recent times the danger of carbon dioxide is very much in the news. How dangerous and what are the risks of this and other greenhouse gasses that sometimes unbeknown to us we come in contact with? (to be continued – part 11)