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To limit global warming for the purpose of reducing temperature, the world needs "rapid and deep" changes in energy systems, land use, urban and industrial design, transportation and transportation. Use of buildings, the report said. Annual levels of carbon dioxide pollution, which continue to increase now, are expected to decrease by approximately half by 2030, then to be close to zero by 2050. Emissions of other gases to greenhouse effect, such as methane, will also have to decrease. Quickly moving fossil fuels such as coal, oil and gas could be more expensive than the less ambitious goal, but it would eliminate the air from other pollutants. And that would have the advantage of avoiding more than 100 million premature deaths during this century, the report said.
