The history of climate change and the history of architecture are connected in many ways. Through a multilayered chronology, It’s About Time showcases historical and contemporary building projects such as solar houses, autonomous structures and earth buildings, alongside more than 45 key moments in environmental justice history: among them the first Earth Day, the United Nations conference in Stockholm, the Chernobyl disaster, the Paris Climate Agreements and the European Green Deal. It explores architectural experimentation in the past, depicts the present moment of transition and offers hopeful glimpses of the future. Serving as both a reference and a source of inspiration, this publication is intended for architects, educators, students, scientists or anyone looking to play their part in shaping a more sustainable world. It emphasizes that while the time for change has now arrived, the field of architecture can play a key role in the transitions ahead.