Many people might not be familiar with the technology area called Climate Tech. This term refers to a technology often discussed that focuses on reducing CO2 emissions or dealing with the effects of global warming. Many startups in Japan and overseas are addressing the issue of decarbonization in the business world while also pursuing profitable business ventures. DDAA designed the interior of the 0 Club, a coworking space for startups, VCs, and academics specializing in Climate Tech and related businesses. The term "Climate Tech" covers a wide range of approaches to the goal of carbon neutrality, including the development of alternative and clean energy sources to replace petroleum, measures to address construction materials such as concrete and steel that emit large amounts of CO2 and toxic substances during the production process, the development of upcycled and recycled materials with low environmental impact, and measures to reduce food loss. The 0 Club was created as a place for companies in this field to come together.