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Jeff Tollefson

Do we still have time?

​Making sense of recent energy trends can seem like a high-stakes Rorschach test. Some experts see the boom in renewable energy and the shift away from coal in many countries as evidence that the world is beginning to turn a corner on global warming. Others see simply a continuing reliance on low-cost fossil fuels, slow governmental action and a rising risk of planetary meltdown.


The fact is that both sides are right. Renewable energy is indeed undergoing a revolution, as prices for things such as solar panels, wind turbines and lithium-ion batteries continue to plummet. And yet it is also true that the world remains dependent on fossil fuels — so much so that even small economic shifts can quickly overwhelm the gains made with clean energy.


So it was in 2017, when, after staying relatively flat from 2014 to 2016, carbon emissions grew by about 1.5% (see ‘A brief lull’). All it took to create that spike was a small rise in economic growth across the developing world, according to a final estimate released in March by the Global Carbon Project, an international research consortium that monitors carbon emissions and climate trends.

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