Environmentalists to Advocate Volcano Regulations?

Hawaii's Kilauea volcano is the nation's top producer of sulfur dioxide.

Since it began erupting on Jan. 3, 1983, the volcano has been sending an average of 1,000 metric tons of sulfur dioxide into the atmosphere each day, according to the Hawaii chapter of the American Lung Association.

This is 6,000 times the amount emitted by a major industrial polluter on the mainland, making Kilauea the nation's top producer of sulfur dioxide.