In 1831, an unknown volcanic eruption triggered one of the most significant cooling events of the 19th century. This eruption released massive amounts of sulfur dioxide, altering global temperatures and ushering in widespread environmental and societal changes. Nearly two centuries later, scientists have unveiled the identity of this "mystery volcano"—Zavaritskii on Simushir … [Read more...] about ‘Mystery volcano’ that erupted and cooled Earth in 1831 has finally been identified