Our 6th episode is all about regional renewal, with 4 ideas for upping local appeal while protecting the environment. On a remote Taiwanese island, they're offering free rentals of stainless-steel cups to help keep the seas free of plastic. In Tokyo, architect Kuma Kengo is proposing a new kind of park for a new kind of city. A town in Iwate Prefecture is using geothermal energy and IoT farm management to revitalize the region. And in Kyoto Prefecture, preserving traditional houses is key to the city's future appeal.

• lae astra