What is the role of humans in climate change? "Call me a converted skeptic," physicist Richard Muller wrote in an Op-Ed in the New York Times this week, describing his analysis of data from the Berkeley Earth Surface Temperature project. Though Muller was once a notable skeptic regarding studies connecting human activity to climate change, he has now concluded that "humans are almost entirely the cause" of global warming.
NPR's Ari Shapiro speaks with E.J. Dionne of The Washington Post and Brookings Institution and David Brooks of the New York Times about the grand jury's decision not to indict police officer Darren Wilson and the resignation of Defense Secretary Chuck Hagel.
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