Research on the connection between carbon dioxide (CO2) and climate warming often sparks debates and discussions. One primary argument suggesting that CO2 is a consequence rather than a cause of global warming involves data from Antarctic ice cores. These data indicate that in the past, at the end of ice ages, atmospheric CO2 concentrations started rising only after temperature increases, implying that CO2 growth was not the primary cause of warming.

Ice core studies propose that during the conclusion of past ice ages, temperature increases might have triggered a rise in CO2 levels, subsequently leading to further warming. This process, known as positive feedback, could have amplified minor temperature changes. However, climate models suggest that greenhouse gas increases, including CO2, account for about 40% of the warming at the end of ice ages. The remaining 60% of warming could result from other factors, such as changes in ice cover.

Importantly, CO2 is just one of many greenhouse gases, and these gases are among numerous factors influencing climate. Therefore, there is no reason to expect a perfect correlation between CO2 levels and temperature in the past. If a significant change occurs in another climatic factor, such correlation may be disrupted.

Findings from a study published in the journal "Atmosphere" suggest that factors other than the demonized carbon dioxide may be responsible for recent climate changes. The study's author, Dr. Stuart Harris, Emeritus Professor of Geography at the University of Calgary, argues that carbon dioxide (CO2) is only one of many possible factors affecting recent climate changes and probably not the dominant one. Reviewing literature from the post-World War II era, Harris identifies numerous other explanations proposed at various times in different studies regarding recent climate changes, extending beyond the currently widely blamed carbon dioxide.

This implies that the entire climate tax frenzy aimed at reducing anthropogenic CO2 emissions may prove senseless, as other processes underlie this phenomenon, and increased CO2 may be a result rather than their primary cause.