The document discusses trends in sustainable building design and low energy buildings. It covers several topics: 1. It describes various trend-setting sustainable building designs from around the world that use techniques like vertical gardens, biomimicry, and seamless indoor-outdoor integration. 2. It discusses the characteristics and goals of low energy buildings, which aim to reduce embodied and operational energy through techniques like passive design, automation, and renewable energy integration. 3. It proposes new sustainability indicators and models for comprehensively assessing the environmental impacts of building materials and construction processes from a life cycle perspective.