The Pennsylvanian Period lasted from 320 to 286 million years ago. During the Pennsylvanian Period, widespread swamps laid down the thick beds of dead plant material that today constitute most of the world's coal. The term Pennsylvanian is a...

The Pennsylvanian is a subperiod of the Carboniferous period lasting from roughly 325 Ma to 299 Ma (million years ago). As with most other geologic periods, the rock beds that define the period are well identified, but the exact date of the start and...

Some students at the University of Pennsylvania have eagerly waited for three years to be pelted with flour, eggs, ketchup and mustard.They'll have to settle for streamers and marshmallows.That was part of the compromise agreed to by Penn officials and students participating in "Hey Day,"...

A man who used the Internet alias "Iceman" stole credit card and identity information from tens of thousands of people by hacking into the computers of financial institutions and credit card processing centers, federal authorities said Tuesday.Max Ray Butler, 35, of San Francisco, was indicted...

When in the course of human events it becomes necessary to honor the grave sites of Declaration of Independence signers, don't count New Jersey in. It says it can't afford it.Five Declaration signers are buried in the Garden State: four New Jerseyans and a Pennsylvanian....

Pennsylvanians will be unable to take a driver's license test, visit a state-run museum or place a casino bet starting Monday unless an 11th-hour breakthrough ends a budget stalemate that threatens a partial government shutdown.If Sunday ends without a compromise between Gov. Ed Rendell and...