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Jo Handelsman on the Surprising News That the Earth is Running Out of Dirt

That’s Dr Jo Handelsman, who studies microbes at the University of Wisconsin – not only the vast array of microbes that live on and in us, but also the even greater number that lurk in the soil beneath our feet. I talked with Jo about why both the microbes within and below us are so important to our survival. But we began our conversation, which took place last fall, talking about the weather…which—these days—often leads to talk that’s far from small.