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Environment

Why 2023 was almost certainly the hottest year ever recorded

Greenhouse gas levels and the arrival of the El Niño weather pattern pushed the world’s climate into “uncharted territory” in 2023

By James Dinneen

13 December 2023

EVROS, GREECE - AUGUST 31: A firefighters runs as wildfire intensifies in the village of Sidiro and Yannuli in Evros, Greece on August 31, 2023. Efforts to extinguish wildfire continues. (Photo by Ayhan Mehmet/Anadolu Agency via Getty Images)

A wildfire in Greece in August

Ayhan Mehmet/Anadolu Agency via Getty Images

THE official numbers aren’t in yet, but this past year was almost certainly the hottest on record, with high temperatures driving extreme events across the planet. From record-breaking wildfires in Canada to record-low levels of sea ice in Antarctica, researchers say this year’s weather phenomena were shocking, even if they were precisely what was anticipated with climate change.

“We’re getting to a point where one year was bound to happen where [the effects of climate change] would be so pervasive we started to pay…

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