Cracks run through the partially dried-up river bed of the Gan River, a tributary to Poyang Lake during a regional drought in Nanchang, Jiangxi province, China, August 28, 2022. REUTERS/Thomas Peter/File PhotoSays Earth's climate more sensitive to emissions than thoughtLONDON, Nov 2 -
"The 1.5C limit is deader than a doornail," said study co-author James Hansen of Columbia University's Earth Institute who was among the first scientists to alert the world in the 1980s to the climate-warming impact of greenhouse gases. Countries will gather later this month in Dubai for the annual U.N. climate summit to discuss global policy efforts to rein in greenhouse gas emissions.Scientists have underestimated how sensitive the Earth's climate is to rising carbon dioxide levels. The IPCC has given a best-guess estimate that the doubling of atmospheric carbon dioxide levels would yield global warming of around 3C .
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