A Plea For Tolerance Towards 'Non-Native' Plants

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Over the past few decades, an incredible amount of time and money has been spent trying to remove populations of "non-native" plants. But according to a panel of ecologists, climate change, urbanization and other changes in land use have largely invalidated the theory that foreign plants are inherently harmful to their newly adopted ecosystems.

Mark Davis, professor and the chair of the Biology Department at Macalester College, speaks with us. Davis wrote an article supporting his theory in the latest issue of Nature magazine.

professor and the chair of the Biology Department at Macalester [Mick-CAL-ist-er] College. Mark wrote an article supporting his theory in the latest issue of Nature magazine.