In another year of wild weather, scientists have issued the clearest warning yet that global warming will produce "unprecedented extreme weather conditions and climate events."
Following a meeting in Kampala, Uganda, the Intergovernmental Panel on Climate Change confirmed two decades of climate research, putting its findings in polite but stark language of "disaster risk management."
The IPCC is "virtually certain that increases in the frequency and magnitude of warm daily temperature extremes and decreases in cold extremes will occur in the 21st century on the global scale."
Current research suggests it is "very likely" these changes are already happening globally, the report said. That parallels a "statistically significant increase" in heavy rainfalls. The effects appear to be occurring on "the continental scale" in North America, Europe and Australia, and possibly elsewhere, according to the report.