California Gov. Gavin Newsom delivered remarks at the United Nations Climate Ambition Summit in New York, declaring during his speech, "This climate crisis is a fossil fuel crisis."

People on social media pounced on Newsom's comments.

"How did you get to New York?" one person wrote.

"Did he fly there on an electric plane?" someone else posted.

"Gavin rode a bicycle from California to New York," another individual mocked.

Author and entrepreneur Vivek Ramaswamy, who is one of the Republican candidates currently vying for the GOP presidential nomination, sparred with Newsom.

"My message to @GavinNewsom: The climate change agenda has NOTHING to do with the climate & everything to do with letting China catch up to the U.S. It's not complicated. Drill. Frack. Use Coal. Embrace Nuclear," Ramaswamy tweeted.

"Keep auditioning for the hall of fame for the most ignorant analysis of science. Your coal agenda is up there with your 9/11 theories," Newsom replied.

"The climate disaster-related death rate is down by 98% over the last century, due to fossil fuels," Ramaswamy fired back. "8x as many people die of cold temperatures as warm ones, and the best way to stop all temperature-related deaths right now is broader access to fossil fuels. China has 115 coal plants under construction now & another 250 planned while we’re shutting down the few we have left in America. These are inconvenient truths for the likes of the @GavinNewsom who wax eloquent about 'science' without having the first clue about it. Utterly shameful that this represents the state of political leadership in America today."

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