Volcanic CO2 was, even at the time of this 2009 article, not even 1% of human-caused CO2. As the article further explains, SO2's role is complex and its net effect may be cooling rather than warming.
"Are Volcanoes or Humans Harder on the Atmosphere?": Does one major volcanic eruption generate more climate-altering gas than that produced by humans in their entire history?, Scientific American, February 11, 2009
So, given ‘Off-the-charts records’: has humanity finally broken the climate? Damian Carrington, Nina Lakhani, Oliver Milman, Adam Morton, Ajit Niranjan and Jonathan Watts, in The Guardian, 28 Aug 2023
Analysis: Why scientists think 100% of global warming is due to humans | @hausfath.bsky.social #CBarchive Read here: bit.ly/3g1vEtL
— Carbon Brief (@carbonbrief.org) October 28, 2025 at 11:42 AM
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Trump Abandonment of Global Treaties, Including Landmark Climate Deal, ‘Threatens All Life on Earth’ “Trump cutting ties with the world’s oldest climate treaty is another despicable effort to let corporate fossil fuel interests run our government.” Jake Johnson, Common Dreams, Jan 08, 2026
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