WATCH: CNN trolls Sarah Sanders with ‘Facts First’ real-time lie-buster during White House briefing

CNN trolled Sarah Sanders with a real-time "Facts First" lie buster, as she undermined the Trump administration's new report on climate change during Tuesday's White House press conference.

"The president is certainly leading on what matters most in this process and that's on having clean air and clean water," Sanders began, before saying that the latest report came to "radical conclusions" that "contradicts long-established trends."

As she spoke, a window suddenly opened, reading "CNN Facts First: climate change report involved 300 scientists, 13 federal agencies."

CNN, repeatedly attacked by the president as "fake news", has been hammering the administration on the report for the past week. Sanders continued to dismiss the findings of the scientific report.

Watch the video below.