Global Warming is a subject of great concern, and many people are looking for ways to reduce their “environmental footprint.” There is much discussion about switching to compact fluorescent bulbs and hybrid automobiles. These changes will help, but they are only part of the picture. There is very little discussion of the enormous impact made by architecture and urban planning. Tim Frank, a senior policy advisor to the Sierra Club on livable communities, will talk about “Cohousing and Global Warming” on Monday, June 25. The free presentation will be from 7 to 8:30 p.m. at the Fair Oaks Community Library,...