Trump Says He Hasn't Read UN's Dire Report on Global Warming

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The contribution of nuclear power increases significantly under all IPCC scenarios which aim to keep global warming under 1.5°C.

It will be a key scientific input into the Katowice Climate Change Conference in Poland in December when governments review the Paris Agreement to tackle climate change.

While warming of 2C above pre-industrial levels has widely been thought of as the threshold beyond which risky climate change will occur, vulnerable countries such as low-lying island states warn rises above 1.5C will threaten their survival.

The Intergovernmental Panel on Climate Change (IPCC) report shows unprecedented changes were needed across society to limit global warming to 1.5C above pre-industrial levels.

Countries are already seeing an increase in extreme weather and rising sea levels as a result of the increase in average global temperatures of 1 degree above pre-industrial levels that has already occurred, the IPCC study said.

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In order to limit temperature rise to 1.5°C, by 2050, coal electricity generation would need to be reduced to 0-2% of global generation.

A United Nations report on Monday said that temperatures are likely to rise by 1.5 degrees Celsius between 2030 and 2052 if global warming continues at its current pace and if humanity fails to take rapid steps to curb the problem. It compares the impact of global warming of 1.5C and 2C. Limiting global warming to 2 degrees no longer cuts it. And furthermore, the way things are going, we may achieve 1.5 degrees by 2040.

The report calls for huge changes in land, energy, industry, buildings, transportation and cities. Global emissions need to be cut be 45% from 2010 levels by 2030, and renewables will need to make up at least 85% of electricity production by 2050 with coal use down to almost zero. Global CO2 emissions may need to peak around 2020.

"Limiting warming to 1.5°C is possible within the laws of chemistry and physics but doing so would require unprecedented changes", said Jim Skea, Co-Chair of IPCC Working Group III.

These carbon dioxide scrubbing techniques would be particularly vital if the global temperature were to briefly peak above 1.5°C before being wrestled back down below the target by the end of the century.

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But the report said the efficacy of measures, such as planting forests, bioenergy use or capturing and storing CO2, were unproven at a large scale and carried some risks.

Further, "t$3 he decisions we make today are critical in ensuring a safe and sustainable world for everyone, both now and in the future, said Debra Roberts, Co-Chair of IPCC Working Group II". That could reduce flooding and give the people that inhabit the world's coasts, islands and river deltas time to adapt to climate change. It encompasses 195 member states and is tasked with assessing science related to climate change and providing guidelines for policy makers.

Taking the valuable input from the Report into account, the Commission will work to present in November an European Union strategy for long-term greenhouse gas emission reduction.

Institutional investors, such as insurers, could face transitional risks, where governments and citizens, fearing potential catastrophic impacts of climate change, respond aggressively to decarbonize the economy, and assets in fossil fuels become stranded investments as the sector plunges on the markets.

In the 728-page document, the United Nations organization detailed how Earth's weather, health and ecosystems would be in better shape if the world's leaders could somehow limit future human-caused warming to just 1.5 degrees Celsius (2.7 degrees Fahrenheit) rather than the 2C target agreed to at the Paris Agreement talks in 2015.

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