is an award-winning journalist writing most often about the environment and energy. His book "The Unnatural World" publishes November 2016. It's about whether the planet has entered a new geologic age as a result of people's impacts and, if so, what we should do about this Anthropocene. He also hosts documentaries, such as "Beyond the Light Switch" and the forthcoming "The Ethanol Effect" for PBS. He is the science curator for TED.
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