A major new climate report released by the United Nations on Sunday night concludes that a “rapid and far-reaching” transition in how the world uses energy must occur by 2030 to stave off the worst effects of a 1.5-degree rise in the global temperature.

The report was released after a week of deliberations in South Korea on drafting recommendations for policymakers on confronting the effects of a 1.5-degree Celsius rise in the global temperature. The findings will be used to consider upping the goals of the Paris climate change accord, which only sought to limit global warming by 2 degrees.