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Bad news, vegetarians. Turns out plants don’t like being eaten any more than animals. Plants possess a set of responses to the world they inhabit, just as we do, and charting the intricacies of that system has produced some of the most interesting work in contemporary biology — work that helps us understand not only plants but ourselves. We spoke for this week’s podcast with Simon Gilroy, a professor of botany at the University of Wisconsin at Madison, who recently published a paper about the surprising mechanism powering a threat signal found in plants.