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2022 was a remarkable year for the climate. Here’s what to expect in 2023.

Yale Climate Connections · Dana Nuccitelli · last updated

The past year was full of milestones in the worlds of climate science and policy. The year 2022 saw one of the strongest La Niña events in the past half-century, second only to that in 2011.

Related Knowledge Center: Climate science

State of Play

What began as a theory in the 1890s — that industrial emissions of carbon dioxide could increase global temperatures — had progressed to a scientific fact a century later. Scientists across a range of disciplines are studying the impact of the still-growing concentration of carbon dioxide and other so-called “greenhouse gases” in the atmosphere as they call for industrial and governmental policies to slow, then halt, the warming of the planet. 

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