Those tiny squares of paper we stick on envelopes hold secrets that would surprise even the most curious minds. From the world’s first postage stamp that revolutionized global communication to rare ...

To mark the 250th anniversary of the United States, we’re cataloging 25 objects that define the country’s history. We often think of history as something written in a speech or fought for on a ...

The U.S. Postal Service issued a new stamp that celebrates Colorado's 150 years of statehood. The new stamp, "Colorado Statehood," commemorating the state's 150th anniversary, was unveiled at the ...

Muhammad Ali once joked that he should be a postage stamp because “that’s the only way I’ll ever get licked.” Now, the three-time heavyweight champion’s quip is becoming reality. Widely regarded as ...