AN INTRODUCTORY ESSAY SUGGESTS THAT TOMOROW'S ARCHITECTURAL LESSONS WILL BE LEARNED FROM STUDYING NATURE, RATHER THAN CLASSICAL FORM, AND THAT AN APPRECIATION OF COMPLEX NATURAL SYSTEMS WILL SERVE AS THE UNDERPINNING FOR A NEW ARCHITECTURE AND SOCIETY. OTHER ARTICLES DISCUSS PIONEERING EFFORTS IN CENTRAL HEATING AND FORCED VENTILATION; OPTIONS AVAILABLE FOR ACROSS-THE-BOARD REDUCTIONS IN ENERGY USE THROUGH BUILDING DESIGN AND OPERATION; AND HOW AND WHY BUILDINGS USE ENERGY. INNOVATIVE ENERGY CONSERVATION MEASURES ARE ALSO EXPLORED, INCLUDING THE USE OF THERMAL NETWORK ANALYSIS TECHNIQUES TO PREDICT THE PERFORMANCE OF PASSIVE SOLAR-HEATED BUILDINGS. ANOTHER INNOVATIONS IS THE USE OF A BUILDING BIOCHEMICAL CHART TO DEFINE HUMAN COMFORT AND TO DEVELOP AN ARCHITECTURAL DESIGN BASED ON CLIMATE. STILL OTHERS CENTER AROUND FENESTRATION AND HEAT FLOW THROUGH WINDOWS AND COMPUTER-AIDED ENERGY DESIGN FOR BUILDINGS. A LIFE-CYCLE COSTING GUIDE FOR ENERGY CONSERVATION IN BUILDINGS IS PRESENTED AND A COMPUTATION OF THE ENERGY REQUIRED TO BUILD, ALTER, AND MAINTAIN BUILDINGS IS OUTLINED. OTHER TOPICS COVER ENERGY MANAGEMENT FOR COMMERCIAL BUILDINGS, ENERGY AND PATTERNS OF LAND USE, APPROPRIATE TECHNOLOGY, AND AN INNOVATION PROGRAM FOR ENERGY CONSERVATION AT THE BUILDING SCALE. EXTENSIVE TABULAR DATA, CHARTS, PHOTOGRAPHS, AND ARCHITECTURAL DRAWINGS ARE INCLUDED. (AOP)