There’s been a noticeable temperature rise even when taking out El Nino variations and expected climate change since 2020, Hansen said. He noted recent shipping regulations that have resulted in reduced sulfur pollution, which reflects some sunlight away from Earth and effectively reduces warming. And that will continue, he said.

The world warmed to yet another monthly heat record in January, leaving scientists shocked. It was hoped that the La Niña weather which began in the same month would get 2025 off to a cooler start than 2023 and 2024,

For Americans, news of a record warm January might seem odd given how cold it was. But the U.S. is just a tiny fraction of the planet’s surface.