How fast can the world decarbonize?

The truth is, we have no idea. But it better be fast.

Can the world meet its goal to lower carbon emissions?
(Image credit: Ikon Images/Corbis)

This weekend, international leaders managed to hammer out a deal for how to tackle climate change. And on the surface, it's not hard to see why naysayers on both the left and right are declaring it a giant nothingburger.

The agreement is largely voluntary: 187 countries submit pledges to reduce greenhouse gas emissions based on what they think they can handle. Most of the structure the deal provides is a regular process to check in on progress and revise goals. If all the current pledges stick, global warming this century will likely be between 2.7 and 3.5 degrees Celsius — well above the 2 degrees Celsius threshold considered safe, and the agreement's ideal goal of 1.5 degrees.

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Jeff Spross

Jeff Spross was the economics and business correspondent at TheWeek.com. He was previously a reporter at ThinkProgress.