Canadian architect Brian MacKay-Lyons feels that modern architecture education distances students from the tangible act of building. To provide students with more hands-on experience, he created the Ghost Architectural Laboratory. For two weeks each summer, students and professors work under MacKay-Lyons's guidance to build structures that explore what is sustainable and meaningful.

"e²: the economies of being environmentally conscious" is an ongoing PBS documentary series about solutions to the world's most pervasive environmental challenges. The series continues its flagship coverage of sustainable architecture with "e² design season three," featuring innovations in green building and planning from around the globe. Check your local PBS listings for television broadcast dates in your area.

The "e²" series and its video podcasts are produced by kontentreal, and distributed within the United States by PBS. More information is available at pbs.org/e2/ and e2-series.com/