The UN IPCC in its latest major global analysis estimated that the total impact of unmitigated climate change from extreme weather, changes in agriculture, rising sea levels and so on would be equivalent to reducing the average person’s income by between 0.2 and 2 percent in the 2070s. By then, developing world incomes will have increased by 400 percent to 500 percent or even more. Climate impacts have an ever smaller impact on humanity because of prosperity and resilience. A hundred years ago, climate disasters globally killed about half a million people annually. Today, with many more people, that toll has dropped by more than 95 percent...
The Paris agreement on climate change is already an incredibly expensive way of helping very little. Those using the latest IPCC report to call for bigger political promises miss the point by a mile...
Cutting carbon emissions is incredibly expensive. Green energy is not yet able to compete with fossil fuels to meet most of humanity’s needs. Forcing industries and communities to shift — or plying them with expensive subsidies — means everyone pays more for energy, hurting the poorest most. If all the promises in the treaty are kept, the resulting global hit to growth will reach $1 trillion to $2 trillion a year by 2030.
But even if the alarmist predictions are true, there's nothing that can plausibly be done at this point to stop it. That's the real message of the annual UN Intergovernmental Panel on Climate Change report. The chart contained in the "Summary for Policymakers" shows projected changes in global temperatures over the next 100 years. It also shows that temperatures will top the supposed 1.5-degree limit by around 2040, even if the world makes drastic reductions in CO2 and other greenhouse gas emissions within the next two decades...The UN's forecasts all assume that the entire world becomes entirely carbon-free by 2055 … at the latest. That's just 37 years from now. It also assumes that the world makes massive reductions in other greenhouse gases, such as methane.
Here's an example of what the UN says would have to happen within the next 12 years to meet that goal. Keep in mind, this is the low end of the UN's proposed changes.
60% of the world's energy would have to come from renewable sources by 2030, and 77% by 2050. (The Department of Energy forecasts that renewables will account for just 27% of the U.S.'s electric power generation by 2050.)
Coal use would have to drop 78%, oil 37%, and natural gas 25% — compared with 2010 levels — within 12 years. (Last year, global coal demand increased, and use of natural gas has massively climbed in the U.S.)
There'd have to be a 59% increase in nuclear power by 2030 and a 150% increase by 2050. (Good luck getting environmentalist to buy into that).
Farmers would have to figure out how to cut methane emissions by 24% by 2030, (and still feed a growing worldwide population).