New on Slate: How koalas are becoming part virus…just like us

Slate is running a “pandemics” series, and I’m offering up the view from deep time. Koalas are getting hammered by a viral epidemic right now, and we’d do well to understand their woes. Because over the past 60 million years, we’ve experienced much the same thing, and it’s helped make us who we are today. Check it out.

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