Innovative apartment buildings : new directions in sustainable design Current design of apartment buildings is facing challenges of philosophy and form. Past approaches no longer sustain new demands and require innovative thinking. The need for a new outlook is propelled by fundamental changes that touch upon environmental economic cultural and social aspects that led to the writing of this book. The depletion of non renewable natural resources and climate change are a few of the environmental challenges that prompted designers to reconsider conceptual approaches in favour of ones that promote a better suitability between buildings and their environments