Afshin Afshar takes a sip from a coffee drink he bought at a Philz Coffee shop in San Francisco, Friday, March 30, 2018. Coffee sellers will have to post ominous warnings in California because each cup contains a chemical linked to cancer, a judge ruled. The culprit is a byproduct of the bean roasting process that is a known carcinogen and has been at the heart of an eight-year legal struggle between a tiny nonprofit group and Big Coffee companies. (AP Photo/Jeff Chiu) ** FILE **
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