The 19th century term describes the perceived right of Americans to use force or the threat of force to wrest desireable land from the grasp of others.

In 23 states, including five presidential swing states, candidates who have denied election results are running for offices that have a direct role in certifying future elections, a new report…

This week, NASA announced it had shut down one of that spacecraft's remaining science instruments — not because the mission has failed, but to keep it alive a little longer.