[NYer]

Mount Bromo volcano is seen erupting again on June 10, 2004. Mount Bromo, a tourist site, began erupting two days earlier, killing two people, 75 km (46 miles) south of Surabaya, the capital of East Java. Indonesia sits astride the geologically active Pacific 'ring of fire' and has more than 100 active volcanoes. REUTERS/Darren Whiteside

[Eric in the Ozarks]

There's more SO2 being expelled from these volcanoes than all the coal fired power plants in North America.