In Paris, the International Energy Agency released a blunt warning about how much it would cost to cut greenhouse-gas emissions enough to make a real difference to the environment. In Washington, the Senate made clear it doesn’t believe Americans are willing to pay that much.
Scientists are widely calling for a cut of more than 50% in global greenhouse-gas emissions by mid-century – a period during which global emissions otherwise are expected to more than double. Meanwhile, governments are debating slapping tough emission caps on industry, requiring industry to pay for the right to dump carbon dioxide into the air.
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