Indicates wheelchair-accessible.

Indicates listening devices.

Events are free unless otherwise indicated.

Symposiums & seminars

Immigration: Pennsylvania at the Crossroads.

Phila Free Library, Central Lib, Montgomery Aud, 1901 Vine St; 215-686-5415. 7 p.m. Wed.

National Constitution Center, 525 Arch St; 215-409-6600. www. constitutioncenter.org. Washington Tug of War: Separation of Powers. Checks and balances among the branches of govt. $15 nonmembers, $12 members, $6 K-12 students and teachers. 6:30 p.m. Mon. Reservations required, 215-409-6700. Dinesh D'Souza, "The Enemy at Home: The Cultural Left and Its Responsibility for 9/11." $15 nonmembers, $12 members, $6 K-12 students and teachers. 6:30 p.m. Wed. Reservations required, 215-409-6700.

Lectures & speeches

The Collective Mind: Rebirthing the Renaissance Man for the 21st Century.

Aaron Shields and Bolivar J. Bueno. Hamilton Hall, U of Arts, 320 S Broad St; 215-717-6486. 6 p.m. Tue.

Three Cups of Tea: One Man's Mission to Promote Peace . . . One School at a Time. Greg Mortenson. World Affairs Council. Union League of Phila, 140 S Broad St. Members dinner and program $70, nonmembers $80, members program only $20, nonmembers $25. 5:45 p.m. Tue. Reservations required at 215-561-4700 or www.wacphila.org.

The Riddle of the Pyramids and the Magic of King Tut. Zahi Hawass, Egypt's secy gen of the Supreme Council of Antiquities. U of Penn Mus of Archaeology and Anthropology, 3260 South St; 215-898-4045. $10. Optional reception and book signing $50, members $35. 6 p.m. Thu. Reservations recommended.

Authors & literature

Free Library of Philadelphia,

Central Library (Montgomery Auditorium), 1901 Vine St; 215-567-4341.

Alice Hoffman, "Skylight Confessions," 7 p.m. Tue. Martin Amis, "House of Meetings," $12, $5 students; 215-569-9700. 8 p.m. Thu.

Barnes & Noble, 1805 Walnut St, 215-665-0716. Irv Slifkin, "Filmadelphia," 7 p.m. Thu.

Screenings

The Great Warming.

Screening and discussion. West Chester United Methodist Church, High & Barnard Sts, West Chester; 484-459-1600. 7 p.m. Wed.

The Passion of Joan of Arc. Carl Dreyer silent (1928). With Muhlenberg film studies prof Ara Osterweil. Bryn Mawr Film Institute, 824 W Lancaster Ave, Bryn Mawr; 610-527-9898. Members $4.50, general $8.75. 7 p.m. Wed.

Please send complete information two weeks in advance to Currents, The Inquirer, Box 41705, Phila. 19101; fax 215-854-4483; or e-mail currents@phillynews.com. Please include a daytime phone phone number for verification.