Over-reliance on carbon capture and storage technology could lead the world to climate tipping points, the head of the world's climate science office has warned. Hoesung Lee, chairman of the Intergovernmental Panel on Climate Change, said the use of technologies that capture or remove carbon dioxide from the atmosphere was "no free lunch" and that countries should be careful. Lee noted that the IPCC found it likely that the global temperature could rise by more than 1.5°C from pre-industrial levels, but then return to below 1.5°C by the end of the century. "The jargon for that is overshooting," he said. “Methods to remove carbon dioxide will be in high demand if this exceedance actually occurs.” (Fiona Harvey)

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