Around the world, demand for sustainable wind energy is growing. But for traditional wind turbines, strong winds can result in temporary shutdowns, and sometimes even severe damage. Atsushi Shimizu's quest to achieve a global first by creating a functional turbine free from propellers takes him to Okinawa Prefecture and the Philippines, but can he successfully scale up his prototype, and will his groundbreaking idea catch on? We follow the latest advances in wind power generation.