What if our cities could actively clean the air we breathe, and every window around us could quietly generate electricity? In this episode of Q in Charge, Joe the Q explores two groundbreaking technologies shaping the future of sustainable cities: China's solar-assisted air-cleaning tower and the University of Michigan's transparent solar window technology. Discover how these innovations work, what scientists have achieved so far, and how they could transform urban design, renewable energy, and environmental sustainability in the years ahead. This is a fascinating look at real engineering breakthroughs that may redefine how we build the cities of tomorrow.