The Washington Post

One new study suggests lower natural gas prices may be saving households up to $725 per year. Others find lower numbers. Here's why they differ.

  • Brad Plumer
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  • Dec 18, 2013
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The White House just raised its estimate of the price of carbon 50 percent. That's a big shift.

  • Brad Plumer
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  • Jun 5, 2013
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The World Bank reports that more than 60 carbon-pricing schemes or either underway or planned for the years ahead, from California to the European Union to South Korea.

  • Brad Plumer
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  • Jun 4, 2013
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Externalities, trade-offs, and the challenges of getting the math right on what carbon really costs the world.