Natural Chlorine New research suggests that dangerous compounds called organochlorines aren't just the result of pollution. A study in the journal Science found that bacteria and fungi can produce the compounds. The finding could make it harder to measure the impact of pollution on the environment. NPR's Christopher Joyce reports.

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Natural Chlorine

January 21, 200212:00 AM ET

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Natural Chlorine

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New research suggests that dangerous compounds called organochlorines aren't just the result of pollution. A study in the journal Science found that bacteria and fungi can produce the compounds. The finding could make it harder to measure the impact of pollution on the environment. NPR's Christopher Joyce reports.