This weekend, many Penn students witnessed the crowds of juveniles at the corner of 40th and Walnut streets, and many more have heard about it from their friends. The incident - where West Philadelphia high schoolers crowded the corner and police officers were called in to monitor them - attracted much attention, due to the arrest of 10 youths for disorderly conduct, the blockade of streets, the closure of McDonald's and the unconfirmed reports of an assaulted officer.

For female Penn students, the hotter temperatures have officially welcomed in new outfits - without riding boots and North Face fleeces. In this economic crunch, however, the ideal complete summer wardrobe may not be feasible. College Sample Sale presents a more affordable option: On Wednesday and Thursday, this company will offer Penn students high-end living brands with discounted prices in the Bistro Room of Houston Hall.

The Undergraduate Assembly concluded its internal elections yesterday morning after a grueling two-meeting, 15-hour affair that ended just after 4 a.m. The UA body elected College sophomore Alec Webley chairman, College junior Lucia Liu executive vice chairwoman, College sophomore Matt Amalfitano vice chairman for external affairs, College junior Sakina Zaidi treasurer and Wharton freshman Faye Cheng secretary.

Since I don't really go on Facebook, I thought that I'd use my very last DP column ever to write my "25 Things (You Probably Didn't Want To Know) About Me and Penn." Except I could only come up with 20. 1. Best place on campus: 6th floor of Van Pelt. Go check it out.

With graduation on the near horizon, many seniors are probably panicking about impending good-byes and separations. Some of us may be moving to a new city or country alone; some of us may be living apart from that best friend, girlfriend or boyfriend that we hoped we'd still share a zip code with.

Hey Day has historically been the day juniors look forward to the most - but it has also become a tradition surrounded by a heated debate. The Junior and Senior Class Boards worked together this year to decrease hazing during Hey Day and the Final Toast. However, Hey Day 2009 only proves that the event continues to be a divided one: partly a junior celebration, and partly an excuse for seniors to haze their replacements.

These days, Penn researchers are studying everything from skies to the seas - and the people in between. One team of Penn researchers has discovered about 1,000 galaxies since 2006 with the Balloon-borne Large-Aperture Sub-millimeter Telescope. Physics and Astronomy researcher Matthew Truch, who has worked on the project since 2002, said BLAST is the only way to see the earliest starburst, or newly formed, galaxies because the atmosphere is too opaque on the ground.

Royal Mitchell heard the gun go off. He drove out of the blocks to begin his 100-meter dash Friday at the Penn Relays. He just didn't know when to stop. A legally blind athlete competing in the Visually Impaired 100-meter dash, Mitchell had to rely on the crowd and the officials around the track to tell him to slow down after he crossed the finish line.

It may have been easy for the Penn men's track and field team to get lost in the crowd at the Penn Relays this weekend, but Quakers' history was made. The Red and Blue started the Relays off with a bang Wednesday when senior Max Westman won the decathlon, a two-day event, with 6,842 points.

This weekend's Ivy League Golf Championships were supposed to determine the best team in the conference this year. After a wild finish yesterday, they did anything but. Columbia edged Penn by a single stroke - the Lions shot 10-over par (291-283-284 - 858) compared to Penn's 11-over (285-286-288 - 859) - to capture its second-straight title at the Atlantic City Country Club in Northfield, N.

After the final softball game of their Penn careers, seniors Emily Denstedt and Anna Puglisi expressed mixed feelings. According to Puglisi, the game was "fantastic, pretty much as good as it could've gone. It was a great comeback." Denstedt was more disappointed with her own performance.

Both College sophomores, second-year UA members and chairmen of two prolific committees, Undergraduate Assembly members Matt Amalfitano and Mark Pan were well-matched in the election for Vice Chair for External Affairs. Even more fitting of their closeness, each candidate nominated the other for the position.

Derek Vigoa stepped up to the plate with the bases loaded in the bottom of the eighth inning of Penn baseball's final game of the season. The home contest against Columbia was tied at 9 with two outs. On the mound for the Lions was Brian Valero, a teammate of Vigoa's last season at Christopher Columbus High School in Miami, Fla.

For three quarters, it seemed like the seniors on the men's lacrosse team forgot yesterday's matchup against Towson was their last home game. But in the final 15 minutes, Penn's 10 seniors turned it on, leading the Quakers to a 5-0 fourth quarter and a 10-6 come-from-behind win over the Tigers.

Studying alone in Huntsman Hall last week, Senior Class President and College senior Brett Perlmutter got an e-mail that connected him to a nearly 150-year-old tradition. He found out that he, along with seven other soon-to-be graduates, will be awarded Senior Honor Awards at Ivy Day during this May's Commencement celebrations.

Alicia Puglionesi is a College senior from Haverford, Pa. Her e-mail address is puglionesi@dailypennsylvanian.com.