WATERVILLE — Colby College has planned several April events. The following listings are free and open to the public unless stated otherwise:

* What Can Architecture Do? will be the subject at 7:30 p.m. Monday, April 16, in Ostrove Auditorium, Diamond Building.

Nicolai Ouroussoff, the former chief architecture critic of the New York Times, will deliver the Clara M. Southworth Lecture.

For more information, email [email protected], or call 859-5631.

* PechaKucha is planned for 7:20 p.m. Friday, April 20, in Ostrove Auditorium, Diamond Building.

Participants share ideas, work, hobbies, something they care about. Presenters show 20 images and have 20 seconds per image to share with the audience.

For more information, email [email protected], or call 859-5313.

* International Extravaganza will begin at 7 p.m. Saturday, April 21, at Page Commons, Cotter Union.

A student performance of traditional music, dance, and more, from students’ home countries.

For more information, email [email protected], or call 859-4263.

* Collegium Chamber Singers and Players: Ways of the Cross, will be performed at 7:30 p.m. Saturday, April 21, in Lorimer Chapel.

The organization offers a program of Passion music from the 16th and 19th centuries. Lassus’s cycle of sacred madrigals the Lagrime di San Pietro narrates the apostle Peter’s grief over his denial of Christ.

For more information, email [email protected], or call 859-5671.

* The Environment as a Bridge to Peace in the Middle East will be the topic at 7 p.m. Tuesday, April 24, in Room 1, Olin Science Center.

Reduced to one of its core components, the Arab-Iseali conflict is about land — more precisely, the borders that nations draw on the land. When thinking about what divides nations in this conflict, the land is often viewed as one of the major stumbling blocks to reconciliation efforts. When the land is looked upon solely as a geo-political instrument, that is true. However, when viewed from the perspective of the environment, a new framework opens up. Rabbi Michael M. Cohen, a founding faculty member of the Arava Institute for Environmental Studies, is a longtime environmental activist. He is the author of numerous articles and Einstein’s Rabbi: A Tale of Science and the Soul.

For more information, email [email protected], or call 859-5356.

* A talk, How Science Comes to Matter: Having Epilepsy in the Age of the Genome, will begin at 7 p.m. Tuesday, April 24, in Room 100, Lovejoy Building.

For more information, email [email protected], or call 859-4420.

* Colby Undergraduate Research Symposium will take place Wednesday, April 25-Friday, April 27 on campus.

Hundreds of students, representing all academic disciplines, will present research projects through talks, poster presentations, and performances.

For more information, email [email protected].

* Performance Lab Series: The Inaugural Season will be presented at 7:30 p.m. Thursday, April 26, at The Cellar Theater, Runnals Building.

Theater and dance majors create and produce their own work. A glimpse into the future of the performing arts.

For more information, email [email protected], or call 859-4521.

* The Duality of Identity will be discussed at noon Saturday, April 28, at Pugh Center, Cotter Union.

The event will use a panel discussion to consider the many ways we and our ancestors have come to the U.S. Participants can examine central themes of citizenship such as belonging, access to U.S. citizenship, individual immigration stories of recent and multi-generation Americans, and the path for citizenship for undocumented individuals. Part of the 2012 Colby College Ralph J. Bunche Symposium titled Sharing Our Immigration Story.

For more information, email [email protected], or call 859-4250.

* Defining American: Challenging the Immigration Myth with Award-winning Journalist and Activist Jose Antonio Vargas will begin at 4 p.m. Saturday, April 28, in Ostrove Auditorium, Diamond Building.

Vargas, an award-winning multimedia journalist, is the founder of Define American, a new campaign that seeks to elevate the conversation around immigration. Most recently, he was a senior contributing editor at the Huffington Post, where he launched the technology and college sections. He has covered tech and video game culture, HIV/AIDS in the nation’s capital, and the 2008 presidential campaign for the Washington Post, and he was part of the team that won a Pulitzer Prize for covering the Virginia Tech massacre. In 2007, Politico named him one of 50 Politicos to Watch.

For more information, email [email protected], or call 859-4250.