The Department of Government Efficiency is shuttering organizations that Beijing worried about most, or actively sought to subvert.

President-elect Donald J. Trump promised to delete climate policy. He could face pushback from Republicans benefiting from a boom in clean energy.

The Trump victory sets back the world’s attempt to rein in dangerous levels of warming and potentially isolates the United States in the global energy transition.

The new report also says that global warming has hit a threshold, at least temporarily, that countries had pledged to avoid.

For the past four years, President Biden has argued that the first Trump term was a blip in American history. The election has proved that President-elect Donald J. Trump was no aberration.