France says it will further cut emissions of greenhouse gases with $24 billion of investment through 2022.

Pipeline-sector observers are watching whether a U.S. appellate court ruling, which last month canceled federal approval of a $3.2-billion Florida natural-gas line and two others for not adequately considering the projects’ contribution to greenhouse-gas emissions, could affect approvals of other planned projects.

Environmental groups call the rule an important step in addressing climate change, but oil and gas officials say the regulation is unnecessary.

Engineers and architects are among the leaders of the movement to slow climate change.