In a ranking released by the Environmental Protection Agency, Penn came in first among universities in the purchase of renewable energy credits and 22nd overall nationwide.

In the third part of a series following students applying early decision to Penn, we caught up with Ontario high-school senior William Xiao, who started preparing to apply to an American university in tenth grade.

The School of Dental Medicine announced last week that a preliminary study found that rinsing regularly with mouthwash was linked to a decreased rate of incidence of preterm births.

Freshmen basketball players Keelan Cairns and Simeon Esprit hail from Ireland and England, respectively, but have fit right in at Penn so far — or as well as two tall athletes with foreign accents can fit in.

Yet it’s rare that one becomes talented enough to play two sports at the Division-I level. Such is the case for sophomore volleyball player Kristen Etterbeek, who could just as well have been a collegiate tennis player.

Playing football with the same group of guys for four years has a funny way of strengthening camaraderie. For three Class of 2012 Quakers, the ties go back even further.

This summer, assistant Engineering professor Katherine Kuchenbecker was selected as one of ten PopTech Fellows in the sophomore class of the Science and Public Leadership division. PopTech, an organization which hosts a community of scientists from around the world, is known for its series of talks on popular science issues.

A lively circus act composed of jugglers and tightrope walkers greeted over 200 locals early Wednesday afternoon at the opening celebration of the new green space adjacent to 30th Street Station. GALLERY: Photos of ‘The Porch’ opening

The event, called “Burning of the Epithets,” was planned by the United Minorities Council as part of Unity Week in an effort to encourage those impacted by negative stereotypes of race, gender, social status or sexuality. GALLERY: Photos of ‘Burning of the Epithets’

An underground gas explosion at 34th and Ludlow Streets today at about 5 p.m. Nov. 2 caused pavement damage at the southwest corner of the intersection.

Last week, Business Services sent students who purchased the Eat Any Time meal plan an email restating its policy regarding “moocher meals” — the number of guest swipes allocated to each student. Business Services also posted flyers around the dining halls listing the plan’s terms and conditions. VIDEO: Students’ takes on unlimited dining plan

Thanks to the “Hopes and Fears Revisited” mixed-media installation, members of the Penn community have been writing their hopes and fears on post-it notes, signing them with a fingerprint. INTERACTIVE: Notes from the ‘Hopes and Fears’ exhibitGALLERY: Photos of ‘Hopes and Fears’ exhibit

The symbolic strike, held in solidarity with the Occupy Oakland movement, began at noon and lasted exactly 99 minutes long. TOPICS: Occupy movement

Felony disenfranchisement should never be seen as the proper execution of justice when it more closely resembles cruel and unusual punishment.

As of Monday, you are one of 7 billion people on Earth. How can 7 billion voices be heard? How can 7 billion individual sets of desires be met?

It’s important to bring attention to problems with Penn Course Review, but the solution cannot be to stop using it altogether.

Penn extended its ED application deadline from Tuesday, Nov. 1 to Friday, Nov. 4 due to last weekend’s Northeastern snowstorm, along with peer schools like Yale and Columbia.