Which innovative sustainable material, made from agricultural waste, was used in the award-winning 'Breathe Austria' pavilion at the Milan Expo 2015?

Test your knowledge about groundbreaking sustainable innovations in architectural design! The architectural industry has been rapidly evolving to address environmental concerns, with new materials and technologies emerging to reduce carbon footprints while maintaining aesthetic excellence. This question focuses on a notable sustainable innovation that has transformed how architects approach environmentally-conscious design.

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Mycelium-based insulation panels
Recycled plastic cladding
Hempcrete structural walls
Bamboo composite framing