Anna Dyson, director of the Center for Architecture, Science and Ecology at Rensselaer Polytechnic Institute, will discuss "Built Ecologies" on March 23 at 5:45 p.m. in the Weston Lecture Hall at NJIT's College of Architecture and Design. The lecture, which is free and open to the public, is part of the Spring 2009 Evening Lecture Series. For more information or reservations, call 973-596-3080.