A streak of record-setting heat that began last summer has now persisted for an entire year across the globe, researchers announced Wednesday, pushing Earth closer to a dangerous threshold that the world’s nations have pledged not to cross.
Under the landmark 2015 Paris agreement, the world’s leaders pledged to limit Earth’s temperature rise to 1.5 degrees C (2.7 degrees F) over preindustrial levels, to avert some of the worst effects of global warming. The fact that the planet surpassed this mark for one year does not amount to a permanent shift, but it comes as scientists are warning that it is likely to happen again — within a few years.
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