Looking at all the Alarmists irrational explanations is proving the battle is won, yet because they won a bloodless coup, they hold the power to force this scam upon us.
Can CO2 harm humans, the answer is Yes, however it takes 10,000 ppm or 1% just to make some people feel drowsy. The Atmospheric CO2 levels are apparently 393-394 ppm. The gradual increase when it occurs appear to seldom be above 1 ppm each year,

If exposed at a level of 2% for several hours, minimal “acidosis” (the acid condition of the blood) may occur (As long as your kidneys are good, they will correct this condition naturally).

Breathing rate doubles at 3% CO2 and is four times the normal rate at 5% CO2.

Toxic levels of carbon dioxide: at levels above 5%, concentration CO2 is directly toxic. [At lower levels we may be seeing effects of a reduction in the relative amount of oxygen rather than direct toxicity of CO2.]

Symptoms of high or prolonged exposure to carbon dioxide include headache, increased heart rate, dizziness, fatigue, rapid breathing, visual and hearing dysfunctions.

Exposure to higher levels may cause unconsciousness or death within minutes of exposure.

Concentrations of between 7% & 10% can cause dizziness, headache, visual and hearing problems and unconsciousness within a few minutes or anywhere up to an hour.

The question is does this warrant a Carbon Tax?

The theory that CO2 emissions will cause the planet to heat up, is also being shot to ground, including former Global Warming alarmists NASA as shown below.

http://www.dailymail.co.uk/news/article-2020427/Climate-change-far-alarmists-predict-says-NASA-scientist.html#ixzz1TYnfXPS5

“Climate change is far less serious than ‘alarmists’ predict, an eminent NASA scientist has said. Dr Roy Spencer, who works on the space agency’s temperature-monitoring satellites, claimed they showed ‘a huge discrepancy’ between the real levels of heating and forecasts by the United Nations and other groups.

After looking at the levels of radiation in the atmosphere over the past ten years, he believes the Earth releases a lot more heat into space than previously thought. This means carbon dioxide emissions do not trap as much heat or force temperatures up as much as global warming bodies fear.

Dr Spencer, a climatologist at the University of Alabama, said his satellite readings between 2000 and 2011 show far smaller temperature rises than six climate models which are used by international governments and corporations to predict changes to our climate in the future.

He said: ‘The satellite observations suggest there is much more energy lost to space during and after warming than the climate models show.

‘There is a huge discrepancy between the data and the forecasts that is especially big over the oceans.’ However critics say his research is over too short a period to draw conclusions and ignores other factors. Dr Spencer is the first scientist to examine the data from NASA satellites in relation to climate change.

http://www.dailymail.co.uk/news/article-2020427/Climate-change-far-alarmists-predict-says-NASA-scientist.html#ixzz1TYnfXPS5

Regards Kev