Katherine Unger Baillie

The University of Pennsylvania’s Ruth Schwartz Cowan has been elected to the American Philosophical Society. She is professor emerita in the Department of History and Sociology of Science.

Nearly half of all adults in the United States suffer from the gum disease periodontitis, and 8.5 percent have a severe form that can raise the risk of heart disease, diabetes, arthritis and pregnancy complications.

The body’s innate immune system is a first line of defense, intent on sensing invading pathogens and wiping them out before they can cause harm. It should not be surprising then that bacteria have evolved many ways to specifically evade and overcome this sentry system in order to spread infection.

April showers bring May flowers, or so the saying goes, but flower formation actually relies on a number of other cues, including day length, temperature, and season.

By Marjorie FerroneFrom Beauregard, Ala., to Washington, D.C., John “Trey” Smith III is invested in the success of America’s education system.

To investigate the interplay between climate change and the ocean, Irina Marinov, an assistant professor in the Department of Earth and Environmental Science, has found it necessary to straddle disciplines.

To investigate the interplay between climate change and the ocean, Irina Marinov, an assistant professor in the Department of Earth a

Raising a child is a massive 18-year undertaking filled with life’s greatest prides and joys, and most terrifying worries and fears. Parenting is no easy task, whether rearing toddlers or teenagers, and can be made even more difficult without guidance, advice, or support from others.

Flowers aren’t just pretty to look at, they are how plants reproduce. In agricultural plants, the timing and regulation of flower formation has economic significance, affecting a crop’s yield.

A series of videos produced by student filmmakers at the University of Pennsylvania has put young biomedical researchers around campus in the spotlight.