CAMBRIDGE, MASSACHUSETTS — A new from Harvard University posits that atmospheric sulfur resulting from volcanic activity may have led to Earth’s first and largest ever planetary freezing. <br /> <br />Earth became covered by ice glaciers around 700 million years ago, notes a Harvard news release. Researchers theorize that this event was caused by 10 years of eruptions from volcanoes that spanned 2,000 miles across an equatorial landmass. <br /> <br />They say these eruptions could have plied the atmosphere with enough sulfur dioxide, a light reflecting gas, to induce radical alterations to Earth’s climate. <br /> <br />The study was published last month the in the journal, Geophysical Research Letters.
