Bauhaus Earth and Pontifical Academy of Sciences conference, June 2022 The built environment is a critical factor in the climate equation. Approximately 40 percent of global emissions derive from the construction, operation, and demolition of human settlements. The 21st century must be the century of re-entanglement, where quintessential functions (housing, work, culture, recreation, etc.) are reintegrated within urban spaces; where socioeconomic and ecological systems form a mutually supportive network of networks; and where past, present, and future are perceived as interwoven waves in the river of time. Fortunately, opportunities exist to transform the built environment from a carbon source to a carbon sink through, e.g. timber construction high-rise buildings, circular bioeconomy methods, AI-assisted design, smart recycling technology, multifunctional land use, integrated regional resource management, and community-based urban development, to name just a few. This volume compiles the papers presented by world-renowned scientists, architects, spatial planners, activists, and policy makers at the Reconstructing the Future for People and Planet conference, held at the Vatican in June 2022. First publication of the Bauhaus Earth think tank Ideas to transform the anthropocene Contributions by Hans Joachim Schellnhuber, Ursula von der Leyen, Edgar Pieterse, Francesca Bria, Xu Tiantian, Shigeru Ban, Sheela Patel, Ana María Durán Calisto, and many others We look forward to the re-entanglement of our cities with the ingenuity of nature’s systems, and to forging closer alliances across Built by Nature, Bauhaus Earth, and all our partners in this endeavor. Donald Brenninkmeijer, Chair Built by Nature, Chair Laudes Foundation Investment Committee　 Leslie Johnston, CEO, Laudes Foundation James Drinkwater, Head of Built Environment, Laudes Foundation