Billie Eilish teamed up with one of her Office heroes and a group of scientists on Tuesday (Oct. 26) to call on world leaders to take “urgent” action on the climate. In a video message recorded with Dunder-Mifflin irritant actor Rainn Wilson, British explorer Levison Wood and Robert Irwin — son of late Australian conservationist Steve “Crocodile Hunter” Irwin — the singer weighed in on the need to act now in advance of next week’s U.N. COP26 climate summit.

“This year our leaders are deciding the global actions required on the environment climate emergency in a critical decade for our planet,” Eilish said in the brief video message. “We must stand together and speak up to save our planet, not just for us, but for our future generations, and we need urgent, urgent action now and to work together as one.”

The COP26 global climate summer will kick off in Glasgow on Sunday (Oct. 31) and run through Nov. 12, with many experts tagging it as one of the last, best chances for world leaders to commit to the vital steps needed to slow down rising global temperatures.

Wilson, who starred in Eilish’s all-time-favorite show, added in his message, “Courage. That’s what our world’s leaders need more than anything. The decisions that they make about the climate crisis in the next decade are the most important decisions in our planet’s history.”

Last month, Eilish was among a group of celebrities who banded together to urge Congress to support President Biden’s “Build Back Better” climate protection plan as part of the #CodeRedClimate initiative.

Watch Eilish and Wilson’s messages below.

“We must stand together and speak up to save our planet, not just for us, but for our future generations and we need urgent, urgent action now and to work together as one”- the amazing @billieeilish gives an important message to world leaders ahead of #COP26 @ArcticBasecamp pic.twitter.com/sK1T1l8NUM

— University of Exeter (@UniofExeter) October 26, 2021

Actor @rainnwilson says the world’s leaders need courage more than anything and their decisions that they make about the #climatecrisis in the next decade are the most important in our planet’s history. @ArcticBasecamp pic.twitter.com/rpSOsrdSyw

— University of Exeter (@UniofExeter) October 26, 2021