A North Dakota judge reduced the jury’s award to the pipeline company Energy Transfer to roughly $345 million, from $667 million.

© Andrew Cullen/Reuters

The oil giant said requirements that companies calculate new details about greenhouse gas emissions and climate risks violate Exxon’s free speech rights.

© David Paul Morris/Bloomberg

Some carmakers and energy executives say the plan would trigger costly litigation and spur individual states to create a patchwork of tighter rules.

© Maddie McGarvey for The New York Times