Leach's initial research interests focused on the Italian Renaissance. His first publication was a translation from the Latin of de re aedificatoria, the fifteenth century treatise on architecture written by Italian humanist, Leon Battista Alberti. The translation was undertaken under the supervision of Joseph Rykwert. Subsequently his interests shifted into the realm of contemporary architectural theory, and he developed a particular interest in Continental Philosophy and its potential impact on architectural thinking. Leach's position in regards to architectural theory was first set out in the "cultural reader" he edited, Rethinking Architecture. The book contained a selection of well-known writings about architecture written by thinkers within Continental Philosophy, ranging from Hermeneutics and Phenomenology to Structuralism and Deconstruction, prefaced by Leach's own introductions. Among the authors included were: Jacques Derrida, Martin Heidegger, Umberto Eco, Michel Foucault, Jean Baudrillard and Walter Benjamin. What the selection set out to represent was a rethinking of architectural practice; making it a critical activity, not simply accepting the given paradigm, while at the same time placing architecture within the realm of cultural studies. He subsequently published a series of edited volumes and monographs based on material from that book. His more recent work has developed in the direction of materialism and computation, inspired in part by the work of Gilles Deleuze and Manuel DeLanda but also by new scientific thinking. This informs his curatorial work and design teaching which engage extensively with scripting and digital fabrication. He is the co-recipient of two NASA grants to explore the potential use of the robotic fabrication technology, Contour Crafting, for building structures on the Moon and Mars.
Activities in China
Leach has been involved extensively in China, where he directed the American Academy in China for several years. He was the co-curator of the A2 Exhibition of Avant-Garde Architecture at the Architecture Biennial Beijing 2004, the Emerging Talents, Emerging Technologies Exhibition at the Architecture Biennial Beijing 2006, the material Processes Exhibition at the Architecture Biennial Beijing 2008, and the Machinic Processes Exhibition at the Architecture Biennial Beijing 2010. He was also the co-curator of the Swarm Intelligence: Architectures of Multi-Agent Systems Exhibition in Shanghai in 2010, and of the DigitalFUTURE Exhibition in Shanghai in 2011 of the Interactive Shanghai Exhibition in Shanghai in 2013, and of the Design Intelligence: Advanced Computational Research Exhibition in Beijing in 2013, and the Digital Factory: Advanced Computational Research Exhibition in Shanghai in 2015. He currently holds a Chinese government 'High End Foreign Expert' Professorship at Tongji University, where he is a PhD supervisor.
Publications
On the Art of Building in Ten Books with Joseph Rykwert