Attempts to curb climate change by capturing carbon underground or geo-engineering to help the Earth better reflect incoming sunlight are nowhere near ready for use, a US panel of scientists says.

“There is no substitute for dramatic reductions in greenhouse gas emissions to mitigate the negative consequences of climate change,” said the National Research Council on Tuesday in a two-part report on proposed climate-intervention techniques. “If society ultimately decides to intervene in Earth’s climate, any actions should be informed by a…