Journalist, @SchusterInst senior fellow, TED speaker | | Coming Sept. 19th: BIG CHICKEN (NatGeo Books/PRH) on antibiotics and agriculture.

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I'm an independent journalist specializing in public health, global health and food policy; for the past couple of years I've had a special interest in antibiotic misuse and overuse in medicine and agriculture.

I'm a National Geographic contributor, and I also write for the New York Times Magazin...