Peterson, 53, recently announced that in December she'll move over to Johnson & Johnson, overseeing its $15 billion global consumer business, supply chain and IT operations. As CEO of Bayer CropScience, the German conglomerate's $10 billion agriculture business, she has pushed profits up 26% to $2 billion in the first half of 2012. She has also signed 30 international acquisitions and ventures in the last two years, including the recent nearly $500 million acquisition of U.S.-based AgraQuest. She is the first female chief in Bayer's 150-year history and in her next move she will she will be the most senior women at J&J -- and a likely candidate for Fortune's domestic MPW list.
This year's Most Powerful Women are shaping the future of technology, defense, and media.
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