New York Times: These are rough times for carbon taxes, aimed at mitigating climate change. Australia recently repealed its carbon tax. South Korea delayed a carbon-based tax on vehicle emissions. South Africa put off a planned carbon tax until 2016. And yet, for environmentalists, a sliver of hope exists in the shape of Chile, one of Latin America’s fastest-growing economies, which last month approved the first carbon tax in South America. The measure, due to take effect in 2018, was part of a broad overhaul of…

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