Erratum.
In Eliot Marshall's article "California's debate on carcinogens" (News & Comment, 20 Mar., p. 1459), the last sentence of the third paragraph, which refers to fines to be imposed under Proposition 65, should have read, "Companies found guilty of violating it will be charged $2500 a day and legal costs." The article gave the incorrect figure of "$25,000 a day."