Which sustainable building material has seen the highest growth in specification by architects serving millennial clients (aged 25-40) in the last two years?

The architectural industry is increasingly embracing sustainable materials as clients demand more environmentally responsible buildings. Recent market research shows a significant shift in consumer preferences toward eco-friendly design solutions. This trivia question explores an emerging trend in sustainable architectural materials and its impact on customer demographics and purchasing decisions.

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Cross-laminated timber (CLT)
Recycled steel
Hempcrete
Solar glass