Although climate fanatics call carbon dioxide a "greenhouse gas" and blame it for climate change, long-term research data show no real link between global air temperatures and trace gases.

Our air is about 78% nitrogen and 21% oxygen. These two gases make up about 99% of it. Carbon dioxide, the so-called "greenhouse gas", currently accounts for 0.0384% (384 ppm). A value that has repeatedly been subject to huge fluctuations over the last millions and even hundreds of thousands of years. This is also confirmed by extensive studies. The last 15,000 years in particular are very interesting, especially since the actual average atmospheric CO2 concentration was around 350 ppm and not around 280 ppm as is often claimed. Moreover, there are variations of up to 50 ppm every 1000 years.

Such natural fluctuations can be explained, for example, by volcanic eruptions raising CO2 levels in the clouds, vegetation takes advantage of this and grows faster, and so the gas concentration gradually falls again until a new wave of volcanic eruptions causes the values to rise again, let it shoot. The positive effects of higher CO2 levels in the air on vegetation have already been sufficiently proven (see here and here ). Moreover, human activity had no significant effect on CO2 levels in the air in the millennia before the industrial revolution, so these fluctuations must be of natural origin.

New research published in the Journal of Sustainable Development also shows that there is no meaningful link between atmospheric CO2 levels and changes in global temperatures. Wallace Manheimer, a former researcher at the US Naval Research Laboratory, simply cannot find a correlation based on the available data for the last 400 million years. Earth's temperatures fell repeatedly, even though CO2 levels were high for a long time (cooling effect of volcanic ash in the air?), but temperatures also rose as CO2 levels fell.

If you consider that there is more ice in the Arctic today than there was 3000 years ago, that the Romans grew wine in England (where the climate is now unfavourable) and that the Vikings grew oats in Greenland (no longer possible today), the question arises, why carbon dioxide and above all man are now blamed for such natural temperature variations, while other factors (the sun, the countless microclimate changes caused by urbanisation, afforestation in the north at the expense of winter snow cover, deforestation in the rainforests, etc.) are not to blame?) have been marginalised or even ignored.

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