When the U.S. Constitution was ratified, Congress was granted power to establish post offices and mail routes — many along ...

It has grown from serving the 13 colonies to reaching nearly 169 million addresses and employing more than 635,000 people.

The U.S. Postal Service is turning 250. Saturday’s anniversary comes as the agency faces financial challenges.

VERNAL — A 70-year-old woman was arrested Thursday and accused of spreading a substance meant to resemble anthrax in a complex that houses seniors. When the woman was arrested in her Vernal ...

Panic grips Florida as two more newspaper workers fall ill with anthrax. The FBI uncovers chilling connections—a 9/11 hijacker with possible anthrax exposure, a disturbing motive, and a direct ...