This September issue of A+U is devoted to new technologies in urban science and their applications in settings that range from the aesthetics of urban spaces to participatory democracy and public health. Edited by Yuji Yoshimura, It includes some of the projects developed by 300.000 Km/s such as Mercè, Geographies of the Lockdown, Nocturnal Landscapes, Ciutat Vella Land-Use Plan and Air/Aria/Aire -that explore how these technologies will change the ways in which architects shape urban spaces.

These and other projects from Barcelona, which has been at the forefront of using these new tools at the municipal level, are presented alongside recent efforts in the United States and Japan, covering not only “the physical aspects of cities”, but also “the systems and public-private platforms that have made them possible, and how cities can consider the issue of privacy.” We discover how information can be gathered, visualized, and used as a communication and design tool to plan a livable city, often with the government and citizens in partnership.

The research carried out in the project Nocturnal Landscapes: Urban Flows of Global Metropolises, curated by Iker Gil and organized by MAS Context, has materialized in a publication that collects the contents of the project’s exhibition in Chicago as well as new ones.

Nocturnal Landscapes: Urban Flows of Global Metropolises is a project that observes and analyzes cities at night from an interdisciplinary perspective. We have used data about urban life to compare the rhythms and regions of global cities through cartographic representations. The maps and graphics generated are complemented by the photographs of David Schalliol, photographer and sociologist, questioning the correlation of human activity and light, and revealing hidden aspects of our cities.

A special edition of the COAC magazine Quaderns d’Arquitectura i Urbanisme, dedicated to the project “Catalonia in Venice – Air / Aria / Aire” has recently been published.

The monograph, directed by the architect Olga Subirós, collects the research carried out for the project as well as articles written especially for the magazine.

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The report compiles the results of the Mercè project, a citizen science experiment carried out from May to November 2020 in which citizens have trained an artificial intelligence algorithm to be able to predict the habitability of the city of Barcelona. The report collects the main results of the experiment and determines which are the most and least livable streets in the city based on variables that have been individualized thanks to the vote of the citizens.

Our contribution to the book ‘Integrated urban planning: learning from Europe’ promoted by Diputació de Barcelona and edited by Paisaje Transversal is a compendium of best practices under the title ‘We cannot work with what we cannot measure”.

The article aims at helping institutions to implement integrated urban planning in line with Europe and the major global agendas using a series of own experiences (Energy map of Rubí, Open Papers and Arturo) to present the toolkit available to public administrations today interested in incorporating the new ecosystem of public data and big data into their urban policy and planning.

This article focuses on the existence of a possible data divide in the context of growing digitalization. The Open Papers project helps shine a light on social inequality derived from an inaccurate datafication of the environment. What urban problems are left out of decision-making processes due to a lack of information? How can citizens generate data without using complex technologies through processes of collective capture?