Think fake news is a recent plague, borne of the presidential election? It’s not.

“The notion of ‘fake news’ is hardly new to climate scientists like myself,” Penn State climatologist Michael Mann told Grist. “We’ve known about it (and written about it) for years.”

Thanks to researchers like Mann — the originator of the famed “hockey stick” chart and a frequent target of fake news himself — the science behind climate change is settled. And yet there remains a vocal contingent of ideologues who refuse to accept the connection between carbon emissions and a warming planet. For example, Donald Trump and a good portion of his proposed cabinet. For years, right-wing news organizations like Breitbart, Infowars, the Daily Caller, and Climate Depot have fed their denial, publishing stories that misinterpret, misrepresent, or distort scientific findings — or just outright lie.