Sulfur dioxide
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Sulfur dioxide or sulphur dioxide is the chemical compound with the formula SO2. It is a colorless gas with a pungent smell that is responsible for the odor of burnt matches. It is released naturally
The blue auroral glows of Io's upper atmosphere are caused by volcanic sulfur dioxide.
US Geological Survey volunteer tests for sulfur dioxide after the 2018 lower Puna eruption.
Acid rain-damaged forest in Europe's Black Triangle
The observed trends of global dimming and brightening in four major geographic regions. The dimming was greater on the average cloud-free days (red line) than on the average of all days (purple line), strongly suggesting that sulfate aerosols were the cause.
Sulfur trioxide
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Sulfur trioxide is the chemical compound with the formula SO3. It has been described as "unquestionably the most important sulfur oxide". It is produced industrially on a vast scale as a precursor to
An ampoule of sulfur trioxide