The former Governor of California is passionate about the importance of cutting greenhouse gas emissions, having signed a bill creating America's first cap on the toxins while he was in office.

The 68 year old won't back down on his stance however, as he made clear in his latest Facebook post, titled: "I don't give a f**k if we agree about climate change."

"First - do you believe it is acceptable that 7 million people die every year from pollution?" he began. "That's more than murders, suicides, and car accidents - combined. My second question: do you believe coal and oil will be the fuels of the future?"

Arnold went on to use an analogy of two closed doors, one revealing a completely sealed room with a regular, gasoline-fuelled car while behind the other, a sealed room with an electric car inside.

"I'm guessing you chose the Door Number Two, with the electric car, right?" he continued. "Door number one is a fatal choice - who would ever want to breathe those fumes? This is the choice the world is making right now. To use one of the four-letter words all of you commenters love, I don't give a damn if you believe in climate change. I couldn't care less if you're concerned about temperatures rising or melting glaciers. It doesn't matter to me which of us is right about the science. I just hope that you'll join me in opening Door Number Two, to a smarter, cleaner, healthier, more profitable energy future."

Arnold isn't the only A-list actor lending his voice to the climate change charge. Leonardo Dicaprio and Oscar winner Robert Redford are also heavily involved in the movement, and both spoke at the United Nations conference in Paris, France over the weekend (05-06Dec15).