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Volcanic vs Human CO2 Emissions

Comparison of CO2 emissions from volcanic eruptions and human activities, including the impact on climate and the difference in emission rates.

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Jan 11, 2026
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How much CO2 did major historical eruptions like Mount Pinatubo and Tambora emit compared to annual human emissions?

Explosive eruptions such as Mount Pinatubo and historic giants like Tambora released tens to perhaps hundreds of millions of tonnes of CO2 in single events — large for a moment but tiny compared with ...