Exxon’s Former CEO Says Climate Change ‘With Us Forever More’

It’s rare for a current or former leader of one of the world’s largest energy producers to testify under oath about climate change. That’s why a New York courtroom was packed on Wednesday to see ex-Exxon Mobil Corp. Chief Executive Officer Rex Tillerson take the witness stand and explain that the company knew for years how it was a significant threat to the world.

“We knew, we knew it was a real issue,” Tillerson said. “We knew it was a serious issue and we knew it was one that’s going to be with us now, forevermore, and it’s not ...