Patrick Condon, University of British Columbia Professor of Landscape Architecture and author of many books on community design and sustainability, will speak at a brown bag event at Metro on Tuesday, March 29, from 11:30 a.m. to 1 p.m. Condon will share new ideas from his latest book, Seven Rules for Sustainable Communities. Condon contends that cities are responsible for 80% of all greenhouse gas emissions largely due to the factors and patterns associated with late 20th-century growth. He goes further to say that we can make significant strides in achieving U.S. greenhouse gas reduction targets by changing the way we build and retrofit our cities. His visit comes during a week in which elected officials and community leaders will be addressing transportation methods and how they impact the livability of our region in a number of forums.