A new United Nations report reaffirms what world governments have known and failed to deal with for decades: that climate change is our fault, is already causing devastation around the globe and will continue to get worse.

How much worse is entirely up to us.

The assessment from the U.N.s Intergovernmental Panel on Climate Change (IPCC) is an up-to-date scientific understanding of planetary warming, as well as its current and future impacts. The international consortium of researchers left no room for debate over the cause of the global crisis.

It is unequivocal that human influence has warmed the atmosphere, ocean and land, reads a summary for policymakers. Widespread and rapid changes in the atmosphere, ocean, cryosphere and biosphere have occurred.

U.N. Secretary-General Antnio Guterres called the findings a code red for humanity.

The alarm bells are deafening, and the evidence is irrefutable: Greenhouse gas emissions from fossil fuel burning and deforestation are choking our planet and putting billions of people at immediate risk, he said in a statement.