Gore and Wallstrom, who wrote the forward in the Swedish translation of “An Inconvenient Truth,” which was also made into an Oscar-winning documentary, spoke at the International Writers’ Stage lecture series in Stockholm.

Gore said the truth of climate change already is known. Wallstrom agreed, adding that “We may not know every little detail but we know enough to give advice to politicians.”

She said people need to understand it’s not just a temperature change , citing a conversation with a woman in Russia who didn’t think a few degrees warmer would be such a bad thing in a place where it was -41 degrees Celsius outside.

“You have to start explaining the difference between weather and climate,” she said.