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Volcanic and Manmade Pollution Cause Similar Effects

Detailed Description

Sulfur dioxide emissions from the Pu`u `Ō `ō vent on Kīlauea's east rift (right foreground), and the summit vent in Halema`uma`u Crater (in front of Mauna Loa, left background), were being blown to the northeast by winter winds in this January 14, 2009, USGS photo.