(CNN) "Orange is the New Black" actress Yael Stone has said she is giving up her US green card and returning to her home country of Australia in order to reduce her carbon footprint and fight the "climate war."

Stone, who has worked in both countries and starred as inmate Lorna Morello throughout the Netflix show's six-year run, said the bushfires tearing through Australia motivated her to make the decision.

Having a US green card allows the holder to live and work in the United States on a permanent basis.

But the actor said it was time to make "sacrifices," adding that her decision to remain in Australia was made after a "long, considered process."

Stone said it is "unethical for us to set up a life in two countries knowing what we know."