An American Airlines plane with 64 people on board collided with an Army helicopter over Washington, D.C., and crashed into ...

Black History Month wasn’t always a monthlong celebration. In February 1926, historian and author Carter G. Woodson created Negro History Week. It was a weeklong celebration in an effort to teach ...

An Army Black Hawk helicopter collided midair with an American Airlines flight from Wichita, Kansas, at Reagan National ...

After decades of study, scientists sound genuinely optimistic about the possibility of detecting primordial black holes, which might explain dark matter.

Adding to federal workers’ distress, the acting head of the Office of Personnel Management, which is effectively the federal government’s HR department, on Monday instructed agencies to compile lists ...