In 1986 Svante Arrhenius was the first to assert that the use of fossil fuels could impact on the climate. He proposed a relation between carbon dioxide (CO2) concentration and atmospheric temperature.
At that time, this theory wasn’t taken into consideration as the people thought that the human forces were insignificant compared to the natural ones and that the oceans where able enough to reduce carbon in the atmosphere.
In the following decades this theory became more realistic and further studies confirmed the effect of carbon in the atmosphere, so humans started to think about climate saving.
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