Katherine Unger Baillie

A new analysis of dinosaur fossils by University of Pennsylvania researchers has revealed that a number of specimens of the genus Psittacosaurus — once believed to represent three different species — are all members of a single species.

People welcome puppies into their homes for a host of reasons: to rescue them from a harsh life in a shelter, to teach their children responsibility, or just to bask in their utter cuteness.

A new study led by University of Pennsylvania researchers involves a classic case of evolution’s fickle nature: a genetic mutation that protects against a potentially fatal infectious disease also appears to increase the risk of developing a chronic, debilitating condition.

(This is the third in a series about University of Pennsylvania students who took their arguments in support of federal student financial aid to Washington this summer in a project organized by the Office of Student Registration and Financial Services. Other profiles feature students 

Adrian Morrison, professor emeritus at the University of Pennsylvania School of Veterinary Medicine, has had plenty of experience writing about his area of academic expertise, REM sleep.

[flickr]72157633364662905[/flickr] Lentil is a French bulldog puppy with a mission. Born with bilateral cleft lips and midline cleft palate, Lentil, at three months old, is nevertheless a “total pistol” who “rules the house,” according to his foster mom Lindsay Condefer.

Most members of the Penn community know that they share a campus with one of the finest schools of veterinary medicine in the country.

It was 3 a.m. at an engineering camp in Houston when insight struck Allison Pearce, now a junior at the University of Pennsylvania.

The 119th Penn Relay Carnival is coming to Penn’s campus, and faculty, students, and staff are invited to Franklin Field to cheer on athletes as they strive to beat the competition.

Philippe Bourgois and Carlin Romano of the University of Pennsylvania have been named 2013 John Simon Guggenheim Memorial Foundation Fellows.