Two film screenings that are part of Sustainability Month at the Penn Bookstore have new dates: An Inconvenient Truth, April 16, 6 p.m. and The Story of Stuff, April 22, 6 p.m.

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Songs for a New World; experimental theater; 8:30 p.m.; $10, $5/Locust Walk, $7/students; Harold Prince Theatre, Annenberg Center. Also April 18, 8:30 p.m. and April 19, 2:30 p.m. (Intuitions). 

From Throwback to New Jack; coed a cappella group; 8 p.m.; Class of ’49 Auditorium, Houston Hall; $9, $7/Locust Walk. Also April 18 and 19 (The Inspiration). 

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Cirque Du Onda; Latin dance troupe; 3 p.m.; Iron Gate Theater; $10. Also April 19 (Onda Latina). 

Penn Yo, Incorporated; Chinese coed a cappella; 5:45 p.m.; Harold Prince Theatre, Annenberg Center; $10, $8/Locust Walk. Also April 19.

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Addressing Key Health Priorities in the City of Philadelphia; Don Schwarz, Deputy Mayor and Health Commissioner, City of Philadelphia; 4 p.m.; Ben Franklin Room, Houston Hall; RSVP: cphi@pobox.upenn.edu (LDI).

Deadlines: Submissions for the Update are due every Monday for the following Tuesday’s issue. The deadline for the May AT PENN is Today, April 15.  For information see www.upenn.edu/almanac/calendar/caldead-real.html.