Which innovative building product, first commercially successful in 2008, revolutionized energy efficiency in skyscrapers by allowing dynamic environmental response without mechanical systems?

In the world of architecture, product innovation often revolutionizes how buildings are designed and constructed. From sustainable materials to cutting-edge technologies, architectural products constantly evolve to meet modern demands. This poll tests your knowledge about a significant product innovation that changed how architects approach energy efficiency in large-scale buildings. Can you identify the correct breakthrough from recent architectural history?

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Thermobimetal cladding systems that automatically adjust to temperature changes
Carbon-sequestering concrete that actively removes CO2 from surrounding air
Self-healing glass facades that repair microfractures using embedded polymers
Quantum dot solar windows that generate electricity while maintaining transparency