Karen James

Karen James is a Canadian former swimmer. She competed in the women's 200 metre individual medley at the 1972 Summer Olympics.

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A recent report by the New York Times found that Subway's tuna sandwich had "no amplifiable" tuna DNA -- but molecular ecologist Karen James tells Inverse that's not as scary as it sounds. From faulty PCR tests to gloopy mayonnaise, James explores the reasons why tuna DNA may be hard to determine.