(FILES) A picture taken on March 16, 2021 shows people watching Klyuchevskoy volcano eruption on Russia's far eastern Kamchatka peninsula. Massive volcanic areas have continued to release carbon dioxide (CO2) into the atmosphere long after their surface activity has ceased, which could explain the duration of certain episodes of climate change, according to a study published in Nature Geoscience on October 30, 2024. (Photo by MAXIM FESYUNOV / AFP) (Photo by MAXIM FESYUNOV/AFP via Getty Images)