How many carbon credits does it take to offset a volcano?

http://news.yahoo.com/s/ap/20080505/ap_on_re_us/hawaii_volcanic_gas

OCEAN VIEW, Hawaii – For eight years, Tony and Sam Bayaoa have grown thousands of bright red, yellow and pink protea flowers on their farm. Then in March, Kilauea volcano opened a new vent and began spewing double the usual amount of toxic gas.

Now about 70 percent of their crop is dried, brown and brittle.

“The first reaction was – did someone poison the plants?” said Tony Bayaoa, whose two-acre farm is 35 miles from the volcano. “I’ve lost my livelihood.”