During the session Transforming the Built Environment with a Systemic Lens, Aimée Aguilar Jaber, Programmes Director at Hot or Cool, highlighted how the way cities organise housing, mobility, land use and infrastructure directly influences the consumption of soil, energy and resources. She stressed that current planning models are still failing to generate the deep transformations needed to remain within planetary boundaries. A significant example is the “Superblock Model” implemented in Barcelona, where mobility is no longer considered an end in itself, but a tool to improve accessibility, liveability and healthy urban ecosystems.