President Donald Trump acknowledged receiving an alarming report on climate change from the United Nations' Intergovernmental Panel on Climate Change Tuesday, at the same time saying "I want to look at who drew it".
If global temperatures rise 2C above pre-industrial levels, the world's coral reefs - including Ningaloo and the Great Barrier - would die. A huge percentage of reefs, from 70-90%, could still be lost with 1.5 degrees of warming. Human-produced Carbon dioxide emissions would have to drop by 45 percent from 2010 levels by 2030, reaching "net zero" by 2050, according to the report. Global CO2 emissions may need to peak around 2020.
Jim Skea is the co-chair of the IPCC Working Group, and he's a professor at Imperial College London. But the report warns that "the effectiveness of such techniques are unproven at large scale and some may carry significant risks for sustainable development".
Around 6 percent of insects, 8 percent of plants, and 4 percent of vertebrates are projected to be negatively affected by global warming of 1.5°C, namely by shrinking their natural geographic range, compared with 18 percent of insects, 16 percent of plants and 8 percent of vertebrates for global warming of 2°C. We have told you the scientific facts, the evidence.
As per the original Paris Agreement, this report is the first in a series, with the Special Report on the Ocean and Cryosphere in a Changing Climate, and Climate Change and Land set to be released next year.
President Donald Trump says he plans to review the United Nations report that warns of global warming-caused chaos unless drastic action is taken - although he says he's skeptical of its authors.
"The IPCC report is a wake-up call for slumbering world leaders".
The IPCC report says that the next few years are probably the most important in human history and the decisions we make today about climate action are critical. Under the 2015 Paris accord, countries agreed to limit the average temperature increase to well below 2 degrees, with a goal of no more than 1.5 degrees.
"The IPCC report is very clear that government commitments are far from sufficient and will not achieve the Paris Agreement's warming limit - there needs to be a redoubled effort to increase the level of ambition for 2030", says Rueanna Haynes, SIDS climate advisor.
The IPCC report said, "At +1.5 degrees Celsius, twice as many mega cities as present such as Lagos in Nigeria and Shanghai in China are likely to become heat stressed, potentially exposing more than 350 million more people to deadly heat stress by 2050".
"We are at one-minute-to-midnight on the clock showing the time left to act on climate change", Professor Hoegh-Guldberg said.
The WWF called on the European Union to take urgent action to limit global warming to 1.5ºC, saying in a press release: "Approved by 195 governments, the report underscores the small window of opportunity we have to make immediate, deep and transformational changes - without which the world we know will be irreversibly changed".