Seeking to find out exactly what Exxon knew, and when the oil giant knew it, New York Attorney General Eric Schneiderman has issued the corporation an 18-page subpoena seeking four decades of documents, research findings, and communications related to climate change, according to news reports on Thursday.

Inside Climate News, one of two outlets whose investigative reporting spurred the inquiry, said the subpoena delivered late Wednesday “seeks documents from Exxon…related to its research into the causes and effects of climate change, to the integration of climate change findings into business decisions, to communications with the board of directors and to marketing and advertising materials on climate change.”

Click Here: Putters

According to the New York Times, which broke the news of Schneiderman’s probe on Thursday: “The focus includes the company’s activities dating to the late 1970s, including a period of at least a decade when Exxon Mobil funded groups that sought to undermine climate science. A major focus of the investigation is whether the company adequately warned investors about potential financial risks stemming from society’s need to limit fossil-fuel use.”

Following the reporting by Inside Climate News and the LA Times, presidential candidates, elected officials, climate leaders, and advocacy groups have all called for investigations into Exxon’s corporate behavior.