The claim
Ein einziger Vulkan stößt in zwei Sekunden so viel CO2 aus als die gesamte Menschheit in einem Jahr.
Rating
Die Behauptung ist falsch. Vulkane stoßen weniger als zwei Prozent jener CO2-Menge aus, die von Menschen verursacht wird.
Reviewed by dpa ↗ ·
Original fact check ↗Original review summary
The review says volcanic CO₂ emissions are far below human-caused emissions, estimating them at about 1.6% of human emissions. It also cites NASA’s comparison that human activity affects the carbon cycle more than all volcanoes worldwide combined by over a hundredfold.[S1]
Additional context
The review notes that volcanic emissions vary greatly in size and duration, so counting active volcanoes alone does not establish their CO₂ output. [S1]
Volcanic eruptions can also affect climate through sulfur-related cooling, rather than through a major CO₂ contribution. [S1]
Research date:
Sources and attribution
- [S1] dpa original review
Original review · Retrieved October 16, 2026