Trump appears focused on remaking the federal government in his own image. Some of his choices could face difficult confirmation battles.

President-elect Donald Trump is starting to fill key posts in his second administration, putting an emphasis so far on aides ...

Scientists can determine the mass of subatomic particles that are built from quarks by looking at the particles' energy and ...

Trump is expected to make Matt Gaetz his attorney general and Marco Rubio his secretary of state, and place Tulsi Gabbard, ...