Hostility among friends can come from surprising places

Same-race friendships on college campuses can be sources of support and help build a sense of belonging. However, sociologists Sherelle Ferguson, and Annette Lareau, Edmund J. and Louise W. Kahn Professor in the Social Sciences, ...

Bridging Wikipedia's gender gap, one article at a time

As the world's largest and most-used information resource, Wikipedia is home to 6.4 million articles and counting. But despite how comprehensive it seems, 90% of the site's editors are men, and women are vastly underrepresented ...

Interaction with lung cells transforms asbestos particles

A common building material, asbestos is the term used to describe a range of naturally growing minerals. Serious diseases, including mesothelioma and lung cancer, can arise decades after coming into contact with asbestos.

Uncovering unexpected properties in a complex quantum material

Anew study describes previously unexpected properties in a complex quantum material known as Ta2NiSe5. Using a novel technique developed at Penn, these findings have implications for developing future quantum devices and ...

Context-dependent behavior can make cooperation flourish

A person who is generous and caring at home may be cutthroat at work, striving to bring in the most sales or advance up a corporate management chain. In a similar vein, a self-centered neighbor may be a model of altruism ...

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