For related articles and more information, please visit OCA’s Environment and Climate Resource Center page.

(Image: flickr / cc / Kevin Gill)

Climate change is here. Climate change is now. Climate change will be significantly more dangerous, deadly, and expensive if nothing is done to correct humanity’s course, but aspects of future shifts are probably already irreversible.

That’s the assessment of the United Nations’ Intergovernmental Panel on Climate Change (IPCC), which has sent world governments a draft of its final “Synthesis Report” which seeks to tie together previous reports the panel has released over the last year and offers a stark assessment of the perilous future the planet and humanity face due to global warming and climate change.

Based on a clear and overwhelming consensus among the world’s leading scientists, the draft says that failure to adequately acknowledge and act on previous warnings has put the planet on a path where “severe, pervasive and irreversible impacts” of human-caused climate change will surely be felt in the decades to come.

In a clear statement regarding the dangers of continued inaction, the draft report declares: “The risk of abrupt and irreversible change increases as the magnitude of the warming increases.”

Obtained by several media outlets-including the Associated Press, the New York Times, and Bloomberg-the draft includes not new information per se, but employs stronger language and contains a more urgent warning than the previous reports from the IPCC which it attempts to synthesize and summarize.

Asked for his reaction to the draft, Pennsylvania State University climate scientist Michael Mann wrote this to the AP in an email: “The report tells us once again what we know with a greater degree of certainty: that climate change is real, it is caused by us, and it is already causing substantial damage to us and our environment. If there is one take home point of this report it is this: We have to act now.”

As IPCC Chairman Rajendra Pachauri explained in a statement, the last report-which still faces a final review, editing, and approval process-is designed to integrate “the findings of the three working group contributions to the IPCC’s Fifth Assessment Report and two special reports” and “provide policymakers with a scientific foundation to tackle the challenge of climate change.” Taken together, the IPCC reports and their recommendations are designed to help governments and other stakeholders work together at various levels, including a new international agreement to limit climate change, he said.