A panel of scientists and government officials assembled by the United Nations in Copenhagen, Denmark, has completed a comprehensive report that links climate change with human consumptions of fossil fuels and deforestation and provides guidance on how to prevent it from becoming worse.

The Intergovernmental Panel on Climate Change has been working around-the-clock to combine three previous reports into one ahead of Sunday, when it is scheduled to release it to the public. According to the Associated Press, the panel’s members were reviewing the report through 5 a.m. Saturday. IPCC vice chair Jean-Pascal van Ypersele tweeted that the panel adopted the report Saturday afternoon.

The report is expected to detail how humans have shaped climate change in the 20th century, addressing melting Arctic ice and rising sea levels, which may not be reversible without stringent rules to stop greenhouse gas emissions worldwide. The IPCC cites scientists’ findings – with 95 percent certainty – that these gases are the result of burned fossil fuels and deforestation.

The United Nations Environment Program is citing the report as an impetus for the world’s governments and the private sector to act – and to act urgently. UNEP chief Achim Steiner told the Associated Press that it will cost more to cut emissions with each passing year because it will take “far more drastic changes” in the global economy.

The IPCC report is not binding for governments to act. It’s makers’ plans are to “present scenarios showing that warming can be kept in check if the world shifts its energy system toward renewable sources like wind and solar power and implements technologies to capture greenhouse gases from the atmosphere,” the AP reported.