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Flood surge following Hurricane Florence in Horry County, SC on Sept. 25. U.S. Army National Guard / Staff Sgt. Roberto Di Giovine

By Howard J. Herzog

In a much-anticipated report, the Intergovernmental Panel on Climate Change (IPCC) said the world will need to take dramatic and drastic steps to avoid the catastrophic effects of climate change.

Featured prominently in the report is a discussion of a range of techniques for removing carbon dioxide from the air, called Carbon Dioxide Removal (CDR) technologies or negative emissions technologies (NETs). The IPCC said the world would need to rely significantly on these techniques to avoid increasing Earth's temperatures above 1.5 degrees Celsius, or 2.7 degrees Fahrenheit, compared to pre-industrial levels.

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