Reality Check.....

Just so it is perfectly clear....

C02 is not a pollutant. (yet the US EPA calls it " a danger to human health" )
but....
'Carbon dioxide is essential for internal respiration in a human body. Internal respiration is a process, by which oxygen is transported to body tissues and carbon dioxide is carried away from them. Carbon dioxide is a guardian of the pH of the blood, which is essential for survival.'

Carbon dioxide is used by the food industry, the oil industry, and the chemical industry.

Plants require carbon dioxide to conduct photosynthesis........
(Green plants convert carbon dioxide and water into food compounds, such as glucose, and oxygen. This process is called photosynthesis.Plants and animals, in turn, convert the food compounds by combining it with oxygen to release energy for growth and other life activities. This is the respiration process, the reverse of photosynthesis.)

Consider this...     the world needs feeding:

In 1900, the world's population was 1.65 billion.

In 1950, the worlds population was 2.5 billion.

In 1974, the worlds population was 4 billion.

In 2012, the worlds population is 7 billion.

Carbon dioxide in is considered a trace gas.

Five hundred million years ago carbon dioxide was 20 times more prevalent than today.
  
A problem: nearly one third of CO2 emissions occured since 1998, and it hasn’t 'warmed' ....(equal to the 'warming period' preceding it).

"It is of course, the global warming scam, with the (literally) trillions of dollars driving it, that has corrupted so many scientists, and has carried APS before it like a rogue wave. It is the greatest and most successful pseudoscientific fraud I have seen in my long life as a physicist. Anyone who has the faintest doubt that this is so should force himself to read the ClimateGate documents, which lay it bare. (Montford's book organizes the facts very well.) I don't believe that any real physicist, nay scientist, can read that stuff without revulsion. I would almost make that revulsion a definition of the word scientist." (Harold Lewis, Emeritus Professor of Physics, University of California, Santa Barbara)