By Ariana Bacle
September 20, 2015 at 12:00 PM EDT
Mark Ralston/AFP/Getty Images

Multiple actors, including Transparent‘s Jeffrey Tambor and Gaby Hoffmann, donned green ribbons at this year’s Emmy Awards to demand climate action.

The ribbons, which include the phrase “DemandClimateAction,” are meant to support the EPA and President Barack Obama’s plan to take on climate change.

Along with Tambor and Hoffmann, comedian (and Julia Louis-Dreyfus’ husband) Brad Hall, George R.R. Martin, and director David Nutter were also spotted wearing the ribbon at this year’s event.

Stars at last year’s ceremony also donned green ribbons — but for a different reason. Last year’s support for the Green Ribbon Campaign, a movement to open up discussions about mental health, followed Robin Williams’ 2014 suicide. “I dealt with it firsthand and lost someone really dear to me,” Allison Janney told press at the time, referring to mental illness. “Everyone is feeling that.”

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CORRECTION: An earlier version of this post stated that the ribbons were to promote mental health.