Michael Bastasch of the Daily Caller documents a curious development in a court case linked to global warming.

Something bizarre happened Wednesday after the U.S. District Court for the District Northern California held a “tutorial” hearing on global warming science.

Chevron agreed with the latest scientific assessment from the Intergovernmental Panel on Climate Change’s (IPCC), which was released in 2013 and 2014, the oil company’s lawyer said.

California cities, environmentalists and some scientists argued Chevron’s use of the IPCC’s latest assessment was misleading since it was outdated. Effectively, those seeking to punish oil companies are throwing aside the oft touted “consensus” on climate science. …

… San Francisco and Oakland filed suit against five oil companies, including Chevron, over the alleged damages man-made global warming caused. Chevron was the only defendant that chose to participate in the climate science hearing, but the oil company surprised plaintiffs by not challenging the “consensus” IPCC assessment.

That ruffled the feathers of some scientists and environmentalists, who immediately went on the offensive against Chevron, accusing the company of using the IPCC to discredit climate policies.

“Chevron’s lawyer plucked his strategy right from the climate-denier playbook,” environmental group the Center for Biological Diversity climate scientist Shaye Wolf told Earther.

Apparently, the “climate-denier playbook” includes citing the IPCC. Chevron agreed with the IPCC’s scientific assessment, while the company did not agree with policy proposals the international body suggests, the oil entity argued.