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A new study from the University of Texas at Austin suggests that bees exposed to glyphosate, the active ingredient in Roundup, lose some of the beneficial bacteria in their guts and are more susceptible to infection and death. Vivian Abagiu/College of Natural Sciences at University of Texas in Austin hide caption

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Vivian Abagiu/College of Natural Sciences at University of Texas in Austin

A protester takes part in a March Against Monsanto in Paris in May 2016. The European chemical and pharmaceutical giant Bayer is buying Monsanto — and dropping the U.S. company's now-controversial name. Francois Mori/AP hide caption

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Francois Mori/AP