Which sustainable building product innovation was first introduced commercially in 1999 and revolutionized energy efficiency in architecture by dynamically responding to external conditions?

Test your knowledge about significant sustainable architecture innovations that have transformed the industry's approach to environmentally responsible design. This poll explores groundbreaking products and systems that have revolutionized how architects incorporate sustainability into their projects, reducing environmental impact while maintaining aesthetic excellence.

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Electrochromic smart glass that changes transparency based on external light conditions
Self-healing concrete embedded with bacteria that activate when cracks form
Structural insulated panels (SIPs) made from recycled materials
Photovoltaic roof tiles that mimic traditional roofing materials