Small volcanic eruptions over the past 20 years have been protecting the Earth from global warming, according to a new study.
Scientists have confirmed that droplets of sulphur-rich aerosols spewed into the upper atmosphere by volcanoes have been reflecting sunlight away from the Earth.
Until recently it was thought that only particularly large eruptions had any noticeable affect on the climate.
However, the new study has confirmed results from the end of last year that showed these small eruptions can have an accumulative impact on global temperature.
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