A U.S. regulator on Wednesday proposed new rules to strengthen safety requirements for carbon dioxide and hazardous liquid pipelines at a time when carbon capture technologies see increased adoption to fight global warming.

The Pipeline and Hazardous Materials Safety Administration, or PHMSA, announced Wednesday a notice of proposed rule making to strengthen guidelines for carbon dioxide pipelines. The proposed rule would apply to carbon dioxide transported in a supercritical liquid state through pipelines and establishes,

Federal pipeline safety regulators have proposed stronger standards for carbon-dioxide pipelines in the Biden administration's waning days. Why it matters: The Pipeline and Hazardous Materials Safety Administration's proposed rule is a long-awaited effort to address safety concerns around pipelines needed to scale up carbon capture and storage projects.