The UAE, the conference host, asked participants to put aside their disagreements in order to reach an agreement, and on Friday the U.N. climate agency released a fresh draft of its COP28 agreement that includes possibilities for a historic phase out of fossil fuels.

The roughly 200 countries who convened in Dubai for the conference’s midpoint are now anticipated to concentrate on the fossil fuel issue in the hopes of coming to an agreement before the event’s scheduled conclusion on December 12.

“Let’s please get this job done,” COP28 President Sultan al-Jaber said ahead of the release of the draft.

“I need you to step up, and I need you to come out of your comfort zones,” he added.

At least 80 countries are demanding a COP28 agreement that calls for an eventual end to the use of fossil fuels, as scientists urge ambitious action to avert the worst impacts of climate change.

Such a position would be unprecedented, after three decades of U.N. climate summits that never addressed the future of fossil fuels head on, even though they are the top source of planet-warming emissions.