Radio talk show host and conservative commentator Rush Limbaugh speaks at 'An Evenining With Rush Limbaugh' event May 3, 2007 in Novi, Michigan. (Photo by Bill Pugliano/Getty Images)

Conservative radio host Rush Limbaugh attacked famed physicist Stephen Hawking for warning that the Trump administration's agenda on climate change and the decision to pull out of the Paris Climate Agreement could have long reaching effects on the Earth's climate.

Limbaugh said Wednesday that Hawking's warning amounted to little more than "meteorological porn" and attacked the left, saying that liberals had "dumbed down practically everyone in their ranks."

"The left has so succeeded in dumbing down people that they've even dumbed down themselves," Limbaugh said on his nationally syndicated weekly radio program. "They've dumbed down their professoriat, they've dumbed down their commentariat, they have dumbed down practically everybody in their ranks. They have filled them with paranoia and fear."

READ: Hothouse Earth, Other Predictions By Stephen Hawking Who Blasts Trump's Climate Policy

Hawking told BBC News Sunday that Trump's actions have severely endangered the Earth, and that, in the long run, the planet was likely to become like Venus, with unlivable temperatures and a poisonous atmosphere.

"We are close to the tipping point where global warming becomes irreversible. Trump's action could push the Earth over the brink, to become like Venus, with a temperature of two hundred and fifty degrees, and raining sulphuric acid," Hawking said.

Hawking responded to the Trump administration's decision to pull out of the Paris Climate Agreement and said that "climate change is the greatest danger we face."

"Climate change is one of the great dangers we face, and it's one we can prevent if we act now. By denying the evidence for climate change, and pulling out of the Paris Climate Agreement, Donald Trump will cause avoidable environmental damage to our beautiful planet, endangering the natural world, for us and our children," Hawking said.

READ: Stephen Hawking Predictions 2017: Humans Must Build Mars Colony Or Go Extinct On Earth

Limbaugh disagreed with the physicist, saying that it was "insanity" and pointed to previous claims Hawking has made about colonizing on an asteroid or the moon.

Hawking reasserted his opinion about colonizing space during the BBC interview. He said that the best chance for mankind is colonizing in space due to the escalating conflicts and weapons of mass destruction.

"I fear evolution has inbuilt greed and aggression to the human genome. There is no sign of conflict lessening, and the development of militarized technology and weapons of mass destruction could make that disastrous. The best hope for the survival of the human race might be independent colonies in space," Hawking said.

Limbaugh also lamented the fact that grade school science teachers take Hawking as an "irrefutable" source.

"This is insane. But I’ll guaran-damn-tee you that every science teacher in America believes it, junior high, middle school, whatever you call it, grade school. I'll bet you when they see stuff like this, Stephen Hawking is like Bill Nye the Science Guy. He's an irrefutable source to these people," Limbaugh said.