Some religious groups hosted events commemorating 9/11, while others joined several student organizations in issuing a joint statement Sunday night in Houston Hall.

A female Penn student reported that an unknown male grabbed her and “touched her in an inappropriate manner” last night at about 12:45 a.m. nearby Gregory College House, according to the Division of Public Safety.

Philadelphia Mayor and 1979 Wharton graduate Michael Nutter has extended the weekend curfew once again to discourage violent flash mobs.

While the rest of the world becomes a digital open book, Penn’s students seem to be bucking the trend.

One week after his graduation from Penn, Amit Friedlander was diagnosed with Hodgkin’s lymphoma — a diagnosis Friedlander thinks could be linked to the carcinogens he was exposed to five years earlier on the morning of Sept. 11, 2001.

Ameena Ghaffar-Kucher began in 2004 a study of working-class Pakistani-American immigrants in New York City — but her focus shifted quickly to 9/11’s influence.

This summer, 14 Penn students spent two weeks at the Agahozo-Shalom Youth Village confronting the effects of the Rwandan genocide — and witnessing the faith and optimism of the orphans left in its wake.

Ten years after the attacks that changed the world, some of Penn’s war veterans are only just returning to civilian life.

Vice president for Facilities and Real Estate Services, Anne Papageorge oversaw the design of the approximately $1 billion 9/11 memorial in New York, which is scheduled to open this Sunday.

PennCycles — a bike share initiative ­— is hoping to receive funding to launch its pilot in March.

In the years after the attacks, both interest in and prejudice against Islam increased.

Tucked away in front of Van Pelt Library since the second anniversary of 9/11 is a plaque paying homage to 16 alumni who were killed in the attacks. In this special feature, we take a look at five of those stories, through the eyes of those who knew them best.

A snapshot of Penn on the morning of September 11.

As the events of 9/11 recede further into the past, educators are debating how to best present the historical event to college students who grew up with it and younger students who have little memory of the day.

On Sunday, the 10th anniversary of the 9/11 attacks, Penn Museum Associate Director of Education Jean Byrne hopes students will find a place to reflect and share stories at the exhibit, which opened August 20.

Nearly a year after 2010 Graduate School of Education graduate Daniel Chinburg started Penn’s Tea Party branch, the movement died as quickly as it came.

New measures since 2001 include creating a position for a deputy chief of tactical emergency readiness.