Trump said that global warming is a hoax cooked up by the Chinese to damage American industry.
The mainstream media, eager to pounce on any Trump statement to do a "gotcha" and display to the public why Trump was "unfit" as all the Establishment puppet politicians had been primed to say, duly pounced on this statement and tried to frighten their readers with it.
Everyone with an ounce of common sense, i.e. every not employed by the Guardian, knew it was a joke and that although global warming was indeed a hoax, it had nothing to do with the Chinese and they themselves had been hoodwinked to believe in it.
The hysterical cries of the media and the Guardian's Environmental Department, and their inability to understand what every common sense person understood, only ended up ruining the credibility of the Establishment in the eyes of common sense voters, thus leading to Hillary Clinton's downfall.
The media never learn which is why Trump, in an attempt to be polite, called them "a room full of liars" rather than what he could have called them.