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

The one government agency that still reaches nearly every American daily -- undeterred by rain, sleet, snow or even gloom of ...

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

A century-old fossil long mislabeled as a caterpillar has been reidentified as the first-known nonmarine lobopodian—rewriting ...

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

In a new study published in Communications Biology, a team of researchers redescribe Palaeocampa anthrax as the first known nonmarine lobopodian, and the youngest ever discovered. The fossil, which ...