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Here is a dossier of key facts about carbon dioxide (and its role in global warming):

· It is an incombustible, colourless, odourless, tasteless and non-toxic gas

· It is a plant nutrient and, as the ‘fuel’ of photosynthesis and the creation of oxygen, it is absolutely essential to the existence of life on Earth

· Its fertilisation effect has meant that, thanks to our anthropogenic carbon dioxide emissions increasing concentrations in the atmosphere, crop yields have improved dramatically to date and will continue to improve in the future

· It is a weak greenhouse gas

· ***Global warming precedes, and then causes, increases in carbon dioxide emissions***

· Most global warming experienced since 1950 can be attributed to natural climate variability, rather than enhanced greenhouse gas warming from anthropogenic carbon dioxide emissions. Furthermore the rate of global warming experienced since 1950 has many precedents and is not remotely alarming

Carbon dioxide concentrations today are amongst the lowest found in the entire history of the Earth

· Only 0.04% of our atmosphere is carbon dioxide, which makes it what scientists call a ‘trace gas’; it requires extremely sensitive equipment even to detect it

· There is a very poor correlation between carbon dioxide concentrations and atmospheric temperatures so some thing (or things) other than carbon dioxide must be the key driver (or drivers) of global warming

· Carbon dioxide exerts a diminishing warming effect as its concentrations increase and is today almost entirely exhausted as a greenhouse gas

· At low enough concentrations carbon dioxide could cause catastrophic climate change and the extinction of all life on Earth

· Those who would assert that global warming is man-made and dangerous are denying the facts that global warming has been slowing down at precisely the same time that anthropogenic carbon dioxide emissions have been rising and that no unequivocal causal relationship has ever been established between those emissions and observed global warming.
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[more]( https://wattsupwiththat.com/2017/05/14/two-competing-narratives-on-carbon-dioxide/)
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