Carlo Ratti, as the Curator of the 19th International Architecture Exhibition of La Biennale di Venezia titled 'Intelligens. Natural. Artificial. Collective' (10 May-23 November 2025), introduces a Circular Economy Manifesto aimed at addressing challenges in the built environment. 

This initiative, developed with Arup and the Ellen MacArthur Foundation, emphasises creating sustainable, circular designs that leave a lasting legacy rather than serving as temporary showcases. 

The Manifesto encourages participants to eliminate waste, circulate materials, and regenerate natural systems, reflecting a commitment to combating climate change. It outlines seven guiding principles for design, focusing on whole-life carbon, the use of reclaimed materials, zero construction waste, and enhancing ecological value, urging collaborative, innovative solutions for a sustainable future.