A court ruling requires the British government to consider the potential climate impact of the oil and gas produced in the North Sea.

The energy giant is spending nearly $50 billion to expand the Tengiz oil field, allowing it to pump one million barrels a day.

President-elect Donald J. Trump’s news conference at Mar-a-Lago was a reminder of what the next four years may have in store.

The ban affects the entire Eastern Seaboard, the Pacific Coast along California, Oregon and Washington, the eastern Gulf of Mexico and the Northern Bering Sea.

The move, expected as early as Monday, relies on a 70-year-old law that could make it difficult for the Trump administration to reverse it.