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  • bio

    As the director of healthy living science at Environmental Working Group, Nneka Leiba, M.Phil., M.P.H., translates complicated scientific topics, particularly ones dealing with the effects of everyday chemical exposures on our health, into easily accessible tips and advice. Leiba has become an expert in a wide range of issues, including the safety of ingredients in cosmetics and other consumer products, and drinking water quality. She earned graduate degrees in zoology and public health from the University of the West Indies and Johns Hopkins University, respectively.