Gore says that global warming can't be denied. (NBC)

Gore says that global warming can't be denied. (NBC)

Former Gov. Sarah Palin is coming back to Alaska to sign copies of her book "Going Rogue" at Elmendorf Air Force Base.

She'll autograph here memoir Sunday from noon to 3 p.m. at the Joint Military Mall. The event is closed to the general public.

But before she gets here, Palin is battling with former Vice President Al Gore about global warming while world leaders met in Copenhagen tackling climate change and global warming.

Wednesday Palin wrote an opinion piece for the Washington Post.

In it she talks about what she calls the radical environmental movement, and Gore fought back.

In the editorial she debates causes of global warming, calling on the president to boycott the United Nations climate change conference in Denmark.

Palin writes that the conference and the policies being debated "won't change the weather, but they would change our economy for the worse."

That sparked outrage from Gore.

"One-hundred-fifty years ago this year was the discovery that CO2 traps heat. That is a principle in physics. It's not a question of debate. It's like gravity. It exists," Gore said.

Palin says she's never denied climate change exists, but says, "I just don't think we can primarily blame man's activities for the earth's cyclical weather changes"

She warns that if the president pushes for serious cuts in our long term carbon emissions it "will result in job losses and higher energy costs."

"Global warming deniers persist in this air of unreality," Gore said.

Sitting with NBC's Andrea Mitchell, Gore says global warming is no longer a debate, and says a low-carbon economy will actually create more jobs.

He also says it's a moral issue, not political, that should cause us to do something about it.

"This should be a bipartisan issue. It used to be. And the extreme partisanship we've seen in recent years, I think, has affected the way our country has responded to this," Gore said.

Palin says the rush to solve global warming shouldn't be allowed to put a chill on the nation's economy.

Contact Rebecca Palsha at rpalsha@ktuu.com