SubjectEcology and environment
![Il·lustració © Riki Blanco](https://www.barcelona.cat/metropolis/sites/default/files/styles/large/public/pag_38_dolores_raigon_verde_1100x548.jpg?itok=n_Y2BB2R)
Agri-food systems underpinned by the principles of ecological farming continue to grow far and wide across the planet, and 186 countries already implement regulated organic...
![Il·lustració © Riki Blanco](https://www.barcelona.cat/metropolis/sites/default/files/styles/large/public/pag_32_gustavo_duch_1100x548.jpg?itok=AwV83I36)
The growth of cities is paving over nature, encroaching on farmland and stoning agriculture. If, as numerous studies show, urbanisation processes are becoming less and less...
![Il·lustració © Riki Blanco](https://www.barcelona.cat/metropolis/sites/default/files/styles/large/public/pag_60_carles_soler_1100x548.jpg?itok=4HPdtcs7)
The school canteen purportedly plays a major role in the diet of children and teenagers, and is also said to be a tool for learning and education. But there is still little talk...
![L'avinguda Meridiana, entre el carrer de Felip II i la plaça de la Tolerància. © Vicente Zambrano González](https://www.barcelona.cat/metropolis/sites/default/files/styles/large/public/pag86-avinguda-meridiana-tram-entre-el-car.jpg?itok=5qqE-N7y)
Barcelona tops the list of European cities with the highest car density, 5,844 per km2. Although the traffic is twice that of Madrid and five times that of Berlin or Amsterdam...
![Il·lustració © Riki Blanco](https://www.barcelona.cat/metropolis/sites/default/files/styles/large/public/pag_04_shiva_1100x548.jpg?itok=rtmzs_k5)
The coronavirus health emergency has made us see that the planet’s health and our health are inseparable. We must deglobalise the food system that is driving climate change, species...
![Cavallet de mar fet amb materials reciclats. © Curro Palacios](https://www.barcelona.cat/metropolis/sites/default/files/styles/large/public/02_debat_ciencia_1100.jpg?itok=tGmUeBAg)
Climate change is the major political, social and cultural challenge of our time, but it also constitutes a major challenge for science and technology. The City and Science Biennial,...
![Llibre: Paraules d’Arcadi. Què hem après del món i com podem actuar. Arcadi Oliveres. Angle Editorial, 170 pàgines — Barcelona, 2021](https://www.barcelona.cat/metropolis/sites/default/files/styles/large/public/llibre_arcadi_1100.jpg?itok=laWHqEI3)
Paraules d’Arcadi [Arcadi’s Words] is his last book, which I have had the privilege of editing. A compendium of concepts to gain a better understanding of how this world works (...
![Imatge de la proposta Caminar des del centre de b67 Palomeras Arquitectes i Cierto Estudio.](https://www.barcelona.cat/metropolis/sites/default/files/styles/large/public/01_visions_eixample_portada_1100.jpg?itok=fbGVCDhL)
The Cerdà Plan for Barcelona’s Eixample has witnessed multiple interventions since the outset of its execution. This variability, typical of plans or architectures designed with flexible...
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